A group of thieves plans a daring heist to steal a valuable diamond from a wealthy businessman.

At a St. Petersburg boarding school, a new life began for the ten-year-old Alyosha, who was accustomed parental attention. Missing his home, Alyosha created an imaginary magic world of underground dwellers, with a king and his subjects who very much resembled the people surrounding the boy. Alyosha experienced many interesting adventures in this mysterious fairy tale...