Brave sons of the king, twin brothers Jaroslav and Jaromír love and help each other. It was they and another brother - Jindrich, who once saw the portrait of Princess of Diamond Mountains, fell in love and went on her quest.

• Filmové studio Barrandov
• Libuše Šafránková
• Pavel Trávníček
• Luděk Munzar
• Jana Hlaváčová
• Jiří Bartoška
• Ota Sklenčka
• František Hanus
• Lubomír Kostelka