Katja and Johann are two teenagers who are the best of friends. They spend most of their time in a ruined fort, fantasizing about an ideal world. Their relationship becomes threatened when Johann is taken ill with leukemia, and Katja's mother is undecided on whether to stay with her husband or leave with her lover.
Louisa has to struggle through life as a single mother with her children David and Julia. Her colleague and best friend Christa is also fed up with being alone and applies to be a contestant on a TV "single addicted to singles" show. But Christa is too excited, so Louisa stands in for her and actually wins a weekend with the successful music producer Markus Fischer. But the weekend flirtation has blatant consequences ...
