1971 film directed by Petr Schulhoff

A group of children are investigating a chain of mysterious events during the seventies.

Young knight John travels the world in search of fame and fortune, but also to help others and prove himself. However, things go dire fast and he becomes burdened with life's hardships. But then he meets a pretty water nymph, Mary.

A poor miner, Kuba Dařbuján, cares for his wife Markýtka and eleven children. When a newborn arrives, he seeks a godfather and, finding only Death fair to all, accepts a pact: as a doctor whom Death accompanies at the foot of a patient’s bed, he can heal; but if Death stands at the head, no cure is possible. Kuba eventually heals even a miserly brewer, violating the pact and imprisoning Death, leading to a world where no one can die and unforeseen chaos follows.