Distracted by an argument with his fiancée, Katja (Antje Westermann), Philipp Gerber (Benno Fürmann) accidentally runs over a young boy. Panicked, Philipp drives off, leaving the critically injured boy on the road. After the boy dies, his mother, Laura (Nina Hoss), sets out to find the person responsible for his tragic death. She coincidentally meets Philipp, and they start a relationship, both unaware of their morbid connection. When the truth comes out, the consequences are disastrous.