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.
In the frontier village Vetrov boys from the children's home called Indians lead a bitter "war" with the local Símáks. Before a battle the Indians have a meeting in the sandpit with a smoke signaling. The smoke brings to the sandpit a frontier guard Tomás with a police dog Ranek. The children learn from Tomás that Rank served out and that it shall be destroyed. The nine-year old Fanda writes a letter to the "minister of the frontier guards" in which he asks to let Ranek live. To save Ranek's life he also visits the local frontier guard commander. In the end it is decided that children from the children's home may keep Ranek.
A detective story set in a youth mountaineering club. One of the members, Ivan Kočička, nicknamed Kocour, single-handedly investigates the mystery of the body of an unknown man, which he discovered in a cave on top of a rock.
