At first, friendgroup TKKG have no idea that something is amiss when “Jugend forscht” winner Kevin behaves strangely during the presentation of his “Mind Machine” - they blame his nervousness and his unexpected termination of the speech on relationship stress with his girlfriend Nadine. But when Nadine disappears without a trace shortly afterwards, like three other children before her, the amateur detectives know that they have to help the police with their investigation.

The death of a woman can not just bring a wide range of emotions to her daughter and her childhood-friend, but also represents an inexorable journey into the past through memories. Two different points of view about living the consequences of WWII.

Jakob Hansen is a very engaged trainee teacher, who faces his final practical exam for becoming a teacher. Some girls are crushing on him, which brings the soon-to-be teacher into trouble. Two students vent their frustration on him and thus put the ideals of the educator to the test. On the day of the exam, the showdown happens.

Alfred Walch lives in Krems with his wife Anna and his three children Alexandra (17), Daniel (19) and Sonia (6). On Alexandra's 17th birthday, the town festival takes place in Krems. Two reasons to celebrate. The usual arguments between teenagers and parents about when to be home are inevitable. She persuades her father to let her stay longer. But Alexandra doesn't come back at this time either. The parents' initial anger towards their daughter gradually turns to worry and panic when it turns out that the girl was last seen in the harbor area, a shady neighborhood, where she had a violent argument with her supposed boyfriend, Moritz. When there is still no trace of Alexandra the next evening, Inspector Lenz and his colleague Lisa are called in. A large-scale search is launched without success. Alexandra remains missing...

Petra Winter, the notorious headmistress of Berlin's Fröbel-Gymnasium, is known for her strictness and harsh treatment of the school administration. Even the friendly janitor Christian Brenner has a hard time with the principal's uptight manner. To get one over on the hated Ms. Winter, her colleagues arrange for her to stand in for the PE teacher. Now the principal, who is feared by the pupils, has to look after the school's flagging soccer team. But what nobody knows is that Petra Winter is a passionate soccer fan. The janitor, who has his eye on the principal, helps her train the team for a crucial match. Over the course of this time, the headmistress softens more and more and realizes that friendship is more important than discipline.

Scientists try to simulate the Big Bang and the experiment gets out of control. While satellites come down and chaos arises, the stories of several people trying to survive is told.