Johannes Lukas is a young man who despite his 30 years has not yet achieved much in life. He only wants to bring a few books to his mother, who has recently been moving to an old people's home, when he discovers a forgotten film in a drawer in her apartment. To make her happy, he has the film developed. In the photos, however, he does not discover his mother, but himself, accompanied by a beautiful woman whom he cannot remember. He finds out that it is his girlfriend Sarah Völkl who died in a car accident in which he lost his memory. He is still trying to process what he has discovered when he suddenly meets Sarah Völkl on the street.