On an idyllic remote Greek island, retired assassin Julie lives a solitary life. A hermit for the last 10 years to escape her dark past, her humble existence is interrupted when her son Edward arrives with questions around new information on his paternity.

After Edward confronts her, things take a deadly turn, as Julie's dangerous past finally catches up with her and they are forced to flee the island and go on the run together, testing their dysfunctional relationship to its limits.