A history project causes friction among the kids as they quarrel over how to complete it. Nevertheless, their research leads them to uncover some intriguing ancestors.

The kids convert their garage into a popular hangout, but then someone else creates a cooler space, leading to a rivalry.

Dawn creates a fake story for her Web-site column, and soon an urban legend about Pigfoot is born.

Dawn begins playing the tuba in the school orchestra and the boys must pick up her slack at home, so they devise their own extracurricular activity.

The kids head to camp for the summer and decide to take on separate new identities, but social-status maneuvers lead them to become entangled with each other.

The kids go to the mall with their parents and ask to walk around on their own, but trouble follows them.

Dawn misses meeting her idol, Candace Parker, thanks to the boys, who try to right this wrong.

Tom has a new prototype for a shoe and the quads are excited to sell it, but they're suspicious that someone is trying to swipe it.

The kids dress as superheroes for a children's party and Nicky's character becomes very popular, which inflates his ego.

Ricky befriends a group of sophisticated country club children who challenge the quads to a high-stakes mini-golf match.

The quads win their family a vacation to Hollywood, and find themselves caught up in a case of mistaken identity.

The quads win their family a vacation to Hollywood, and find themselves caught up in a case of mistaken identity.

The quads decide to secretly rent out the garage in order to have money to make their own house rules.

Dawn joins a ballet class to have her own activity away from her brothers, but her plan is spoiled when the boys join the class too.

Nicky, Dicky and Dawn challenge Ricky's firm disbelief in superstitions, but they go too far in proving him wrong.

Ricky is confident in his ability to get elected as class president until Dawn enters the race; Nicky and Dicky go from being Ricky and Dawn's running mates to their rivals.

Squishy Paws runs away when the quads are home alone, and they argue about who should be in charge of the search.

Dawn must run a tricky game of interference when each of the boys reveals they have started to look at Mae in a different light.

Dawn plans to get back at Nicky, Ricky and Dicky for reading her diary one too many times, leading none of them to trust each other.

The quads create a courtroom in their garage to settle their own arguments and end up using the court to pass judgment on friends and classmates.

The siblings try to avoid being seen at the movies with their parents for fear of looking ''uncool.''

When Dawn gets sick Nicky, Ricky and Dicky must survive the day without her but they fall apart.

The quads are excited when action star JT Steele comes to live with them while researching his latest role.

While trying to fit in with the coolest people in school, Nicky, Dicky and Dawn must keep Ricky from making them look uncool.

The quads try to make friends with their new neighbor in order to get access to her cool tree house, but soon discover that she is not what she seems.

Dawn grows suspicious of her brothers when Ricky takes credit for artwork that Dicky painted and Ricky uses Dicky's ideas for his own gain.

The kids try to save their favorite café, which faces stiff competition from a well-reviewed neighboring eatery.

Nicky, Ricky, Dicky and Dawn are tired of being lumped together as ``the quads'' until another set of quadruplets steals the spotlight from them.

After binge watching their favorite reality TV show, the quads decide to make a show of their own.

The quads are judgmental about Tom and Anne's plans for the new café, but a wild adventure teaches them not to be so quick to judge.

The quads get on each other's nerves so much that they have trouble sleeping on the night before an important bobsled race.

When Dawn boasts that she is more mature than the boys and is ready to go on a first date, a competition is sparked between the quads.

When a curse hits the Harper house, thunder goes off and everything turns out bad for the family, the family is trying to find out how this all started, so they retraced all the steps before the curse to try and stop the curse.

The quads make a new friend, an amazing inventor, but when not all of them get invited back to hang out again, they start to wonder why.

When Dawn and Mae have a falling out, Dawn forbids Nicky, Ricky and Dicky from going to an upcoming concert with her, but the boys have other plans in mind.

The Quads' eavesdropping threatens to ruin their annual boys vs. girls scare night camp out because of a misunderstanding about going through the change.

When The Quads kidnap a rival soccer team's pig mascot as a prank, they have to pass it off as Anne's surprise birthday present to avoid being caught forgetting her birthday.

Dawn becomes jealous when Mae starts spending time with Miles, so she enlists the help of her brothers to separate them.

When Ricky is put in charge of school news production, he lets the power go into his head. However, when the rest of the Harper quadruplets realize why he's doing it, they come together to help him.

The Harper quads get detention, forcing them to miss the school carnival and the only way for them to make it to the carnival before it ends, is if they work with some of the bad kids.

When the boys put on a talent show for charity to impress some girls, Dawn's secret almost gets revealed.

The boys try to ruin Dawn and Mae's perfect summer after the girls get summer jobs at the Boulderly Hills Country Club.

The Quads accidentally force out the easygoing gym teacher, ruining the class for everyone; they think they've fixed everything with the perfect substitutes, but soon realize their parents have made things worse.

The Harper quads declare their own independence when Dawn decides to get her ears pierced and her brothers decide to get a snake as a pet without asking for permission from their parents.

The quads want to pull off a big stunt so that their class will be remembered by future students, but when they find out that the personal legacy they are leaving behind is not great, they have to fix both before it is too late.

The quads try to take the perfect picture at their Aunt Jackie's farm to best their rival quadruplets, the Kramdens, but end up hurting their aunt's chances to win a contest in the process.

Ricky is accepted into a junior astronaut training program, but only if his siblings join him.

The Harpers get a new gadget that runs their entire household, but the quads take things a little too far when they are left alone with it.

When a famous theater director comes to town for auditions of The Wizard Of Oz, the quads know they were born to play these parts. But when Dawn doesn't get the part of Dorothy right away, she's on a mission to prove she is way better at acting then a diva theater star.

When Dawn does not get the part of Dorothy in The Wizard of Oz, she goes on a mission to prove she deserves the role.

The Quads win the family an all-expenses paid vacation to Hollywood, but soon find themselves caught up in a case of mistaken identity, which leads to an outrageous adventure that turns out to be the best vacation ever.

A misunderstanding almost causes the quads to break up Mae and Miles and disrupt the boys' plans to attend a wrestling match.

The quads learn the dangers of misrepresenting oneself on social media when they pretend to be people they are not.

Dawn joins a ballet class excited to have her own activity away from her brothers, only to have her plan spoiled when the boys join the class too. Guest Star: Maddie Ziegler

Nicky, Dicky, and Dawn challenge Ricky's firm disbelief in superstitions, but when they go too far in proving him wrong, they call on Science Bob to bring Ricky back to reality. Guest Star: Science Bob

The quads try to earn money for a pool so that their house can be the place everyone wants to hang out at during the summer.

It's Quad vs. Quad in the election for class president. Ricky thinks he has the race locked up, but is surprised when Dawn enters. Things get even messier when Nicky and Dicky go from their running mates to their rivals.

When the quads each try to be someone they are not, they all learn a valuable lesson about being true to themselves.

When the quads are pressured by older kids to sneak out after curfew and hang out at Get Sporty, they discover that the store is haunted.

The quads are taught a lesson by Tom and Anne when they are forced to wait in line like everyone else when Isaiah Thomas comes to the store to sign his new shoes.

The quads worry that Britt has developed a "house crush" on Dawn, and have to figure out a way to get him to stop liking her before his secret is discovered and he is sent back to Australia.

Dawn and Mae get jobs to help pay for a trip to Paris, but their plans get complicated when the boys discover that they can use complaining at restaurants to their benefit.

When Nicky, Ricky, and Dawn discover that Britt has been hanging out with their friends without them, they start to question his motives.

After Mae gets accepted to a new boarding school, Dawn is desperate to make lasting memories with her best friend before she leaves; Nicky and Ricky secretly audition new best friends for Dawn.