Ludo Decker and Anna Gotzlowski have been living together for two years. Everyday routine has set in, with Ludo neglecting his household responsibilities much to Anna's dislike, while he is in turn annoyed by her constant complaining. When Ludo runs into his former lover Marie in the disco, and Anna's old boyfriend Ralf comes to stay in their flat for a few days, the young couple faces serious jealousy and doubt in their relationship. Anna secretly reads Ludo's phone messages, while he in turn stumbles upon "The List", an account of Anna's former lovers—including Ralf, who scores better than Ludo does.