After a sudden, devastating loss, Mara flees her family and ends up adrift in a wealthy seaside town with a dead cellphone and barely any money. Mired in her grief, Mara detaches from the outside world and spends her days of self-imposed exile scrounging for food and swimming in the night ocean. In her state of emotional extremis, the sea at the town's edge is rendered bleak, luminous, implacable. As her money runs out and tourist season comes to a close, Mara finds a job at the local wine store. There, she meets Simon, the shop's soft-spoken, lonely owner. Confronted with the possibility of connection with Simon and the slow return of her desires and appetites, the reasons for her flight begin to emerge.