Charlotte returns to Sanditon in unexpected circumstances. A company of Army Officers descend on the town, offering romantic opportunities. Meanwhile, Georgiana meets an intriguing artist and Esther Babington has an unwanted encounter with her past.

Charlotte starts her new job as governess for the mysterious Alexander Colbourne. Alison longs for her knight in shining armor. Georgiana receives bad news, and Tom and Colonel Lennox make plans for Sanditon’s development.

Charlotte and Alexander Colbourne reach an understanding as she and Colonel Lennox enjoy a close encounter. Alison falls for her new beau. Clara seeks Esther’s help.

Tension mounts when Colbourne and Colonel Lennox reunite at Lady Denham’s garden party. Georgiana learns a vital piece of information about her inheritance. Alison’s proposal nearly ends in tragedy.

Lennox and Colbourne’s rivalry over Charlotte comes to a head. Georgiana makes a decision that will impact her future. Edward’s manipulation of Esther takes a dark turn as Alison realizes what she has been missing.

Alison prepares to leave Sanditon with her dreams of romance fading. Esther faces a bleak future. Charlotte wonders what her future will look like. Georgiana learns shocking truths when Sidney’s belongings are returned.

Charlotte arrive back at the Regency era seaside resort—fiancé in tow—for the society event of the year. Seeing Colbourne again leaves her feeling uncertain. Meanwhile, Georgiana receives a shocking threat to her fortune, and Edward tries to prove to Lady Denham that he is a changed man.

Georgiana faces a nearly impossible task in trying to find a lawyer, but help arrives from a surprising place. Lady Denham accepts a new vision for the town and spars with an old flame. Arthur makes a new friend.

Georgiana gets a surprise visit. Colbourne’s shooting party goes ahead and Charlotte has to confront all that she’s lost. Mary and Tom cross swords over his plans for the old town.

Charlotte attempts to distance herself from Colbourne but as they are repeatedly thrown into each other’s orbit, their chemistry rises. Meanwhile Georgiana is unravelling and makes a surprising decision to protect herself.

Charlotte and Colbourne rush to Augusta’s aid and it’s revealed whether Edward really is a changed man or not. Tom secures a financial investment… but is delivered some devastating news. And whilst love blossoms elsewhere, Arthur’s heart is broken.

Charlotte desperately wants to tell Colbourne the truth about her feelings, but a shocking revelation stops her in her tracks. Having opened her heart, Georgiana’s worst fears are realized when she discovers she has been abandoned.