The shy detective Serafim Schröder is still relatively new to the police force. That's why he doesn't yet know all of his employer's rules and regulations and "borrows" a confiscated BMW to impress the attractive student Maria. She is very impressed, not only by the fancy car, but also by the fact that Serafim is a real cop. When Serafim accidentally gets on the trail of a crime and Maria sees him at work, his reputation with her increases considerably....