Reeling from her husband's affair, Rose collides with a marooned teenager in a boarded-up Delaware beach town. Devastated by the news of her husband's affair and convulsed by waves of grief and rage, twenty something Rose (Greta Gerwig)-vengeful, a bit unhinged, and still clad in her pajama bottoms-drives to a sleepy seaside town in Delaware intent on finding her spouse's lover...