Maddie helps London become smart to win over the affection of a scholar. Meanwhile, Cody moves into the coat closet and makes it is own room after he has enough of Zack's sloppiness.

Zack and Cody fall for a French girl who can't speak English very well. Meanwhile, somebody steals London's purse and Esteban tries to help.

Maddie runs a Daycare Service at the Tipton, and when Maddie has a family obligation to attend to, Zack and Cody take over. Meanwhile, London encourages Mr. Moseby to take yoga to help him relax a bit more.

A food critic is coming to the Tipton Hotel. Cody ends up having to fulfill the duties of being head chef, after the Tipton's regular chef suddenly quits, on a very important day.

The boys end up trying to save a horse, which is no easy task trying to keep it hidden. Maddie loans something that is very sentimental to her to London and is mad at her when London loses it.

Zack and Cody have to repair a wall that they damaged as punishment. London begins attending Maddie's private Catholic school due to her poor grades.

Cody runs for class president; Zack decides to run as well, but for the wrong reason. Mr. Moseby gets annoyed with one of the staff members.

Mr. Moseby gets worried when his older brother Spencer arrives at the Tipton for a visit. Zack and Cody buy a bike, but they have to share it. Maddie and Esteban mess with London's horoscope.

Cody is disappointed when he finds out that Zack is doing better than him in woodshop at school. London takes credit for a book that Maddie wrote.

Maddie is having her Sweet 16, and likes to have her party at the Tipton. On that same day, London decides to throw her own bash. Zack ends up trying to figure out what to get Maddie for her special day.

A twins convention is being held at the Tipton Hotel. Zack ends up creating a double date with twin sisters, for him and Cody. London and Maddie end up enjoying a evening with twin brothers.

Zack borrows money from a guest named Maynard to play video games, but starts to fear him when he can't pay it back. Cody enters a spelling bee. London and Maddie help a homeless family.

Mr. Moseby and the Tipton Staff is challenged to a bowling competition, by its rival, Ilsa and her team. Zack is the star bowler for the Tipton, but ends up having to be replaced due to getting grounded. Zack's replacement must overcome his emotional scars, due to a past bowling incident.

Zack makes a new rich friend, who is mean to Cody and thinks he is a dork. Maddie and London have to do a parenting project for school as partners.

Zack and Cody discover a machine of Arwin's creation that can transport people from one dimension to another. They hop in, and find themselves back at a mixed-up version of the Tipton Hotel; where London is a candy girl/babysitter, Maddie is an air-headed rich hotel heiress, and other personalities are switched.

Arwin could win a trophy and a kiss from Carey, if he ends up winning an annual competition for "Hotel Engineers"; in which the boys help Arwin train and compete. Maddie ends up getting hired by London to work at her new boutique.

Zack dreams that he has gone back in time to the Boston Tea Party with his family and friends, where an act of protest by Maddie inspires the him to launch a present-day battle to save a historical park in Boston that's being threatened to be demolished.

A hotel guest trips on Zack's skateboard in the lobby. But when the boys find out that's he's lying in order to get free service, they come up with a plan in order to set things straight.

Cody gets Zack a job at the school newspaper for the advice column since the previous person quits. When a girl he likes asks for advice, Zack tells her secretly to ask him out. So she does. But when she finds out about him giving the advice, Zack is in for a load of trouble. London can't sleep and Maddie, Mr. Moseby & Esteban try to help her sleep.

Raven Baxter is stuck in Boston, where she has a vision that something bad will happen to Cody. After warning him, vaguely, he becomes paranoid. Meanwhile, Maddie tries to get London into wearing Raven's dress, but London is too stuck up to do so, until pop star Hannah Montana arrives at the Tipton, and wants to wear the dress herself. The crossover starts on That's So Raven S04E11 Checkin' Out (I). It continues on Hannah Montana S01E12 On the Road Again (III)

One of Cody's favorite bands is playing a concert at the mall. Cody is tempted to skip school with Zack and Bob, so he can see the band perform. Meanwhile, London meets her new young step-mother.

Zack and Cody's school is putting on the Shakespearean play, "A Midsummer Nights Dream", where Cody tries to keep a certain kiss involving his new girlfriend and Zack from happening, and Zack tries to get a girl. London uses the principles of feng shui as she redecorates the Tipton.

It's International Day at Zack and Cody's school and Zack decides to ask a guest named Kumiko, a Japanese opera singer, to be his project. After Zack loses Kumiko, Carey and the boys must fill in as Japanese singers for a convention being held at the Tipton. Meanwhile, Maddie and London get trapped in London's closet.

Cody, is having difficulty dealing with the fact that Carey has a new boyfriend. But, Zack and Kurt do not have a problem with him because he is rich. London joins Maddie's volleyball team and ends up being rather good- but only when she is mad.

Mr. Moseby schedules a ballroom dancing competition at the Tipton to help raise money for Esteban's sister's quinceañera.

Zack convinces Cody, Jessica, and Janice to go see a scary movie, but when it's Zack who gets scared, Cody uses it to his advantage. Meanwhile, London likes a boy so she pretends to be poor for him to like her.

Zack and Cody join the Wilderness Scouts with their leader being Mr. Moseby. Cody becomes jealous when Zack turns out to be a better outdoorsman. Meanwhile, London claims that Maddie stole her former boyfriend and both plead Carey for advise on her "relaxing" day.

When a hawk comes and lays her egg Arwin scares it away and somebody has to take care of it. Cody agrees, and he does a good job at parenting. Maddie tries to protest about getting rid of the bird.

Zack has to take on the responsibility of taking care of Carey and Cody due to them being ill. Cody uses his illness to his advantage by making Zack his servant. Meanwhile, Mr. Moseby makes an announcement about the "Employee of the Month" and it's employees compete for that title.

The twins compete on a game show in which Cody does the mental challenges, while Zack has to do the physical challenges. Maddie mistakenly sends Mr. Moseby an angry e-mail which she tries to retrieve.

Zack receives help for a history report from Mr. Moseby's grandmother, when she comes to visit. Meanwhile, Mr. Tipton forces London to get a job.

Zack and Cody go on a double date to a miniature golf course. Zack tries to impress his date, Ella, but things backfire on him. Cody and his date, Barbara Brownstein, have an intellectual attraction. London joins a bookclub with her rich friends much to Maddie's amazement. Carey tries to become a more healthy-living person.

When the Tipton holds Health and Fitness week, everyone begins to examine their eating habits. Cody helps Chef Paolo in an attempt to lower his cholesterol, while Carey begins to limit Zack’s sugar intake. Meanwhile, London and Maddie participate in a charity fashion show where they are both criticized about their looks, each taking drastic measures to change.

When a wheelchair basketball team visits the Tipton; Zack and Cody's basketball team plays an exhibition game against them. Meanwhile, Maddie is making a movie for a student film contest. She hires Lance, London and Mr. Moseby, but they're all terrible, so she has to figure out a way to make her movie a success.

After two struggling television writers take inspiration from the Tipton, the gang is flown out to L.A. to serve as consultants on the new show. After the "Zack" & "Cody" actors don't pan out, the twins end up cast as themselves.

Zack & Cody are cast in a TV show based on the Tipton - "How Suite It Is". Maddie and London sneak onto a Old West movie set in an attempt to meet heartthrob Johnny Vaine.

When Zack and Cody knock an ancient mummy over the balcony, Zack dresses Cody up to replace it for the exhibit. Esteban is scared of the curse of the mummy, so he and Maddie try to swap the mummy for Maddie's old doll.

Zack and Cody are not happy about their career aptitude tests. London gets jealous of Maddie when she saves the Moroccan ambassador's life and gets on television.

Cody is graduating from 8th grade as class valedictorian. But Zack is horrified to learn that he has to attend summer school and tries to hide it from his parents. Meanwhile, Maddie becomes a camp counselor at a run down facility with less than ideal girls under her wing.

Cody searches for a summer job, and finds a "help wanted" sign at the local mini-mart. When the owner realizes Cody is friends with London, he will only hire Cody if he will set him up on a date with her. Zack discovers he is the smartest student in his summer-school class, all the other kids make fun of him.

The tabloids report London doesn't know how to swim, so she takes swimming lessons. Zack has been offered to work at the hotel as a plumber or to work at a local market.

Zack and Cody wish for superhero powers when they see a shooting star. Their wish comes true and they learn that Mr. Moseby is their villain, who wants to turn all kids into miniature adults.

Zack gets a job at the minimart, but has to deal with Cody bossing him around. Meanwhile, London doesn't know how to present Lance to her friends.

A competing minimart issues a competition to see who can bag items faster, Zack and Cody accept the challenge. Meanwhile, Mr. Moseby's niece Nia is goofing off with London.

Zack and Cody rent out London's Suite while she is out of town so that Stacie, a cute girl from school can have a sleepover birthday party at the hotel.

When Zack and Cody invite Arwin over for dinner he won't seem to leave. Carey is getting annoyed at him so she forces Zack and Cody to make him go. Meanwhile, Lance dumps London and she wants to find a way to get back with him.

London (even though she can't sing or dance) gets the role of Sharpay in their school production of High School Musical instead of Maddie because Mr. Tipton is financing the director's play "Floss" on Broadway. Zack has to work backstage for detention and Cody gets the part of Troy.

It's the first day of high school for Zack and Cody. For the first time, London has to attend public school.

Zack tries to negotiate a better contract for Carey as the Tipton's nightly singer. Nia and London both want Cody's help with their science projects.

A monster-like robot is accidentally released into the hotel, due to the twins. A Halloween party is thrown by London. A typical prank.

Maddie is back and is not getting along with Nia, while Estaban is not getting along with Patrick, and the rest of staff aren't getting along either. So, Mr. Moseby hires a professional to help the team get along. Meanwhile, when Zack causes some customers to leave, he and Cody schedule a bug convention at the Tipton to make it up to Mr. Moseby. However, due to his fear of bugs, he accidentally releases the bugs into the Tipton.

Cody Martin is currently with Barbara, durring music class there is a famouse Russian violinist Sergie, and he starts flirting with Barbara. One of the classmates starts a rumor that states that Barbara and Sergei are moving back to Russia and are going to sell llamas, cody gets extremely jelous.

Zack and Cody each invite a girl over to their dad's empty apartment. Meanwhile, London teaches Esteban how to act rich because his family has seized power in his native country.

Cody helps London with her online video website. Meanwhile, Zack and Mr. Moseby become addicted to a certain video game.

Tony Hawk checks into the Tipton; Maddie and London has a crush on their fencing instructor. While Zack and Cody are doing their science project, the problem is that Cody has a fear of germs, and when Zack makes a mistake when analyzing a germ from the kitchen and thinks it's a toxic type of black mold, the rumor spreads through the hotel and everyone starts panicking. Cody gets over his fear after he realizes that he can't go skateboarding with Tony Hawk wearing an anti-germs suit.

Zack and Cody befriend Travis, a kid whom they rope into helping them impress their dates. They then bail on Travis and go out with their dates, but lets Travis go with the girls instead. Maddie finds a stranger's phone whom she thinks is her crush (because she and the stranger have many of the same interests, which she found out on the lost phone). At the end, the owner of the phone was an old man, but Maddie takes an interest in the old man's grandson.

Zack tries out for the high school basketball team but realizes there's some stiff competition, the kind he didn't face in middle school, and worse yet, the giant, in-your-face Coach Little (Michael Clarke Duncan). Meanwhile, when they're rejected as cheerleaders, Cody and London form their own cheerleading squad with the help of Mr. Moseby.

Maddie, Cody and Zack compete to get the best guest for London's online chat show. Luckily, The Cheetah Girls and Chris Brown are staying at the Tipton, but who will end up winning the competition?

Zack and Cody offer to bring their mother on a week-long vacation to the S.S. Tipton, staying in the King Neptune Suite, which overjoys Carey. However, they neglect to tell her that the only way they could afford the vacation is for Carey to be the cruise ship's singer, although Carey soon finds this out herself. Since Carey does not want to work during her vacation, she offers to pay for her room herself, although the only room she can afford is the "Sardine Suite" (storage room). Annoyed by the few privileges she has from this, she finally agrees to sing, although she falls asleep in the sun and gets sunburn, no longer able to perform. Zack and Cody then perform in her place and do a good job, and get an encore. Meanwhile at the Boston Tipton, London is hosting a 24-hour telethon during her "Yay Me!" broadcast, while raising money for the homeless/hungry through phone pledges. However, a blizzard occurs, which prevents any of London's guests for her broadcast to get to the hotel (since the roads have all been closed). Therefore, they are forced to improvise, which include Mr. Moseby jumping through a hoop like a dog, Maddie and London performing a ventriloquist act, and London spinning plates. However, they soon realize that their internet connection has been lost for over twenty three hours and that all their performances had been for nothing. Instead, they decide to give the left-over food from the Tipton to the food shelter once or twice a week.

The news of a visit from Mr. Tipton gets the employees excited (and reminiscing) about their good deeds as to who deserves a possible bonus… but when they find out Mr. Tipton is in a bad mood and will fire someone, all fingers point to Carey because of the boys' mishaps, but Zack & Cody come up with a plan.