Four years into her marriage, Jenna is blindsided when her husband asks for a divorce. With time on her hands and her life in flux, she agrees to accompany her eccentric grandmother Evelyn on a road trip to the seaside Massachusetts town where much of their family history was shaped. When they hit the road, Evelyn spins the tale of the star-crossed teenage romance that captured her heart more than seventy years ago and changed the course of her life. She insists the return to her hometown isn’t about that at all—no matter how much she talks about Tony, her unforgettable and forbidden first love.