FBI agent Audrey Parker arrives in the small town of Haven, Maine to solve a murder and soon discovers the town's many secrets—which also hold the key to unlocking the mysteries of her lost past.

Waitress Annie has separated from her suicidal alcoholic husband, Glenn. Glenn has become an evangelical Christian, but his erratic attempts at getting back into Annie's life have alarmed her. High school student Arthur works at Annie's restaurant, growing closer to a new kid in town, Lila, after class. When Glenn and Annie's daughter go missing, the whole town searches for her, as he increasingly spirals out of control.

At the 25th Annual Gilbert family reunion, siblings Gil, Dil, and Lil compete for the coveted Gilbert Cup.