Mr. Kamp is an unobtrusive man in his sixties, living in Cologne, Germany in a huge anonymous apartment building. Now retired, he spent his life as a civil servant, and he still behaves like that. But then everything changes when he happens to meet Claudia, a young, hippie-like student. Claudia is full of sympathy for the old man, and with her direct, uncomplicated, and spontaneous style she finally succeeds to overcome Kamp's attitude of polite reservation towards her. This unequal couple faces a lot of weird and comic situations, which, however, always reflect the incomprehension of their social environment when people realize that these two are buddies, not grandpa and granddaughter.