Friederike Neumeister is unable to move on after the disappearance of her daughter Marie eight years ago. Like every year, she and her son Theo celebrate the missing girl’s birthday. On this day of all days, Theo has a bike accident in front of his school, adding to his mother’s fear and anxiety. Thanks to Katja’s dauntless efforts, the Neumeister family finally learns the truth about Marie’s disappearance.