Ava and her girlfriend Sascha are fighting for a tolerant world. When Ava's father comes to stay with them, their own tolerance is tested.
An excursion boat on Lake Constance. Good-humored passengers celebrate at a costume party. In the middle of it all is Elena Barin on the day before she takes up her post as head of department at the Constance criminal investigation department. She is traveling as a tourist - until the moment she notices a weapon on a passenger.
When mobile nurse Esma finds one of her patients dead, the strictly timed schedule of her day is thrown off balance. Between professional ethics and family obligations, she is faced with a difficult decision.
