After a harmless scuffle outside school, Tarun wonders why his classmate Ronja has a conspicuous number of bruises on her arm and why she reacts so vehemently. He offers to give her physics tutoring after school, hoping to help her and learn more about her. But when Ronja lies to her mother right in front of him and it becomes clear that there is more to her strange behavior than she is admitting, the Pfefferkörner decide to get to the bottom of the matter. And suddenly Tarun himself is under suspicion...
After a harmless scuffle outside school, Tarun wonders why his classmate Ronja has a conspicuous number of bruises on her arm and why she reacts so vehemently. He offers to give her physics tutoring after school, hoping to help her and learn more about her. But when Ronja lies to her mother right in front of him and it becomes clear that there is more to her strange behavior than she is admitting, the Pfefferkörner decide to get to the bottom of the matter. And suddenly Tarun himself is under suspicion...