Single mother Sabine lives with her 18-year-old son Ilya at Kochelsee in Bavaria. Ilya wants to take some time out and go on vacation to Italy with his girlfriend Cora. But Cora suddenly disappears and Ilya goes to Italy alone. When Sabine discovers a buried cave in the mountains shortly afterwards, she finds Cora's body. She fears that Cora was unfaithful to Ilya and that he killed his girlfriend in the heat of the moment. Sabine does everything she can to divert suspicion away from her son. In...