Memorial Day weekend means that seasonal visitors have descended on the glamorous island of Nantucket. For year-round resident Darcy Cotterill, it means late-night stargazing in the backyard of the beautiful house she grew up in and inherited from her beloved grandmother. It’s also Darcy’s chance to hit the beach and meet her new summertime neighbors. But the last person the 30-year-old librarian expects to see staying next door is her ex-husband, Boyz, along with his wife, Autumn, and stepdaughter, Willow.

Darcy must also navigate the highs and lows of a new romantic relationship with local carpenter Nash Forester even as she becomes smitten with handsome vacationer Clive Rush, a musicologist in town to write a book and visit family. And she finds herself pulled into the concerns of Boyz, Autumn, a charming elderly neighbor and an at-risk teen.

As the season nears its end, Darcy must decide her next move: retreating to the comforts of her steady and secure island life, or risking it all for a chance at true happiness.