After two years of being together, Felix and Jannis finally take on the project of their "first shared apartment." Everything could be so wonderful if it weren't for Felix's new case at the youth welfare office: labeled as a foster child with aggression issues, sixteen-year-old Lukas not only turns Felix's work life upside down but also his private life with Jannis. And when Felix realizes the real problems Lukas is dealing with, the boy has already made a fateful mistake...