1:0 für das Glück (2008)

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, h...