This Czech musical deals with adolescent morality and bureaucracy without being heavy handed. Under school supervision, a group of pre-teen boys and girls are busy picking hops. One boy who seeks privacy builds a secret hideaway in an attic. When a schoolgirl finds him in his retreat, innocent puppy-love blossoms, but …

彼得有一个继母，她的贪婪令彼得失去了一切。彼得遇到了当地公爵的两个女儿。他爱上了其中一个，但她很傲骄，彼得对她来说就是个穷屌丝。二女儿阿德尔卡善良谦逊，爱上了彼得。彼得遇到了一个魔鬼，决定一起惩罚那些邪恶的人。