After his divorce, sports store owner Ralf is looking for a new purpose in life - and a new love. But is there anyone in Marburg he doesn't know? Bookseller Maria encounters an old rival - both her affair Max, and her father are just waiting for her to lose her temper. Things escalate - and lead to a surprising encounter.

Ralf is on the lookout: who is the mysterious woman who always writes on his car? After a misunderstanding, he suddenly has a dog and a date with a stranger that takes a completely unexpected turn. Maria also has a date - and gets carried away with an act that ends the day in disaster.

Maria and Ralf try to understand what happened in Cologne. Meanwhile, Marburg is preparing for the city festival and a big comeback: The legendary Chaos-Pendulum is back! The ride on which Maria and Ralf almost met years ago. The brilliant finale?