After the death of her mother, Bea Kanter leaves her home in Hesse in order to start her studies in Frankfurt. She leaves her father Norbert and her younger sister Conny behind. Thanks to her fellow student Andrea, the shy student quickly finds a connection. She moves into a WG and is confronted with the left scene, the rebels of the 1970s. This fits in with her inner life, because she has to distract herself mentally from her father - a conservative entrepreneur, for Bea the epitome of the capitalist. So she becomes a radical rebel.

The summer break is over and the twins returned to Lindenhof. That has now changed a lot. Because Mrs Theobald had to travel, Mademoiselle Bertoux has taken the lead.