Summer, sunshine and boredom. Parents are on a vacation in St. Tropez and NIK has the huge house to himself. He wants to profit and invites his grammer school friends over. He is ready to overcome his insecurity and to do whatever it takes to be part of the 'gang'.

Heidi, is an eight-year-old Swiss orphan who is given by her aunt to her mountain-dwelling grandfather. She is then stolen back by her aunt from her grandfather to live in the wealthy Sesemann household in Frankfurt, Germany as a companion to Klara, a sheltered, disabled girl in a wheelchair. Heidi is unhappy but makes the best of the situation, always longing for her grandfather.

David's and Jessy's love is put to the test when Jessy unintentionally gets pregnant. The thought of becoming a father causes David to panic. Later, when they are attacked in the train and David is unable to protect his girlfriend, David's fear of not being man enough is confirmed. In desperation, he starts to inject steroids. David develops aggressive traits and becomes a threat to his girlfriend and the unborn child.

In the 1970s, an idealistic young social worker is confronted with Switzerland's archaic mental health institutions.