Summer 2007, Finland. While the Kurtti are spending their annual holidays in their cabins, Tommi, 2 years old, is killed by a gunshot. Elias, a 12-year-old neighbor, is blamed for his death. Summer 2019, Greece. 12 years later, the family receives a threatening anonymous letter. In the Greek resort where they are staying, they come across a man that looks just like Elias, in room 301. Is it really him?