An old Chinese couple has a son who never grows any larger than a plum seed, but his size does not prevent him from saving his village from a cruel lord.
When the terrifying Iroko-man tries to take a woodcarver's first-born child as partial payment for bringing fertility to his village, the father must find a clever solution.
With the aid of his magical horse, Ptitsa, a young archer fulfills the increasingly difficult requests of Tsar Ivan and wins the hand of Princess Vassilissa.