On his way to work, Berlin real estate developer Karl wants to drop his kids off at school. But when he starts the car, his phone rings: The strange caller tells him there’s a bomb under his seat which will blow up if Karl or the kids try and get out. He demands Karl come up with a large sum of money very quickly. When his wife starts to suspect him of kidnapping the children, the cops come after Karl too, including explosives expert Pia. A deadly race against time begins: At the mercy of the bomb and pursued by the police, Karl desperately tries to save his kids and himself.