Kat is presented with a book deal that asks her to dredge up terrible memories. Del wants to say goodbye to the past, while Alice yearns to return there.

Alice falls in love with the past and has her first kiss. Kat starts a job at the local paper. Del deals with bittersweet memories attached to Colton's boat.

Alice double dates with her parents as teens. Kat's first visit to the past brings a surprising discovery. Del swallows her pride to ask for help.

Kat chaperones a school dance and reconnects with Brady. Alice wants Nick to find her in the future. Del says goodbye to more memories as a landmark closes.

Kat and Alice try to stop Jacob's disappearance. Del realizes the tragedy of Jacob was not hers alone, but the whole town's, and moves toward healing.

Alice goes to a New Year's Eve Y2K party to support her friend. Kat finds a new mystery about her father, while Del reveals an old secret about him that's troubled her.

When an old friend returns, Alice realizes her relationship has no future, and Kat is shocked by family secrets. Del tries to take a chance with Byron.

After learning that Colton wasn’t having an affair, Kat is determined to unearth the truth about his accident and dispel the rumors that it was on purpose. When Kat shares with Del that he wasn’t unfaithful to her, Del’s memories are painted in a new light. Despite their best efforts, Elliot and Alice aren’t able to dissuade Kat from returning to 2000 to try and change the course of events.

Kat and Alice travel back to 2000 together to attend Colton’s  funeral. Elliot tells Kat she should share with Alice the truth about her visits to the past. Meanwhile, Del goes to the grief group and makes peace with her memory of Colton. Kat has an epiphany that sheds new light on Jacob’s disappearance.