At the water sprite and water nymph school, classes proceed as planned until the water nymphs leave for a dance competition and the water sprites accompany them to cheer them on. Only Vrbata, a notorious troublemaker, remains at the school as punishment. While exploring the cabinet, he carelessly awakens an octopus with living water. Upon the school trip's return, the octopus manages to capture the headmaster and begins to threaten the entire school. At the same time, the vagrant Mikolášek breaks into the school, so the water sprites, water nymphs, and teaching staff must not only fight the sea monster but also solve the problem of how to get rid of him. Unfortunately, nothing goes according to plan, and the octopus gradually captures everyone except the clumsiest water nymph, Křehulová. The situation begins to look hopeless. Fortunately, Mikolášek comes up with a plan and, together with Křehulová, tries to bring it to a successful conclusion...

King Jaroslav and Queen Anna rule over the kingdom of humans. At first glance, it is clear that they do not elevate themselves above others; their children play normally with others, and the royal couple has a good relationship with the family of the stable boy Petr. The neighboring Forest Land is a place where laws that should not be broken reign supreme. Its ruler remains mysteriously in the background, and people can only meet the land's administrator, Pavučinec. King Jaroslav is punished for breaking a long-standing ban and must balance his freedom with a gift for Pavučinec. When he finds out that he would have to give up his son, he tries to save him. But something for something—will Pavučinec choose his sacrifice after all?

A historical film with balladic features set in 1348, when Europe was struggling with the greatest plague epidemic to date. The film strives to portray the Middle Ages as authentically as possible and to create a specific symbolic space in which ideas, dreams, and cultural archetypes are as tangible as beings and objects.