Young blacksmith Mikeš sets out into the world for an adventure, accompanied by the miller's assistant Matěj and the boy Ondra. On their journey to rescue three enchanted princesses, the young men encounter a mischievous old hag, magic, and traps set by the Black King, but most importantly, they face their own temptations.
The filmed fairy-tale is a comedy based on the classical story about Reason and Happiness. This enchanting couple is ever debating on which of the two is more important for mankind, their encounters are watched by the third fairy-tale figure aunt Envy. A story of true love that wins over the evil powers of immortal human envy.
During a summer holiday, two boys discover an anti-gravity cannon in an old attic.
