Wilsberg’s new client Britta Mantzke is found dead near Lake Aa. Inspector Springer and Overbeck call it a suicide, but Wilsberg decides to take on the assignment for his client anyway. He learns from Frauke Weiß, the dead woman’s sister, that Britta had fought her way back from cancer to reclaim her life. With the help of an ultra-modern fertilization clinic, she was even able to fulfill her long-held dream of becoming a mother. That doesn’t sound like a woman who wanted to end her life …