Leda, a middle-aged divorcee, is alone for the first time in years after her two adult daughters leave home to live with their father in Toronto. Enjoying an unexpected sense of liberty, she heads to the Ionian coast for a vacation. But she soon finds herself intrigued by Nina, a young mother on the beach, eventually striking up a conversation with her. After Nina confides a dark secret, one seemingly trivial occurrence leads to events that could destroy Nina's family.