Sadko.

Based on an opera by Nikolai Rimsky-Korsakov, which was based on a Russian epic tale of the same name. In the old Russian city of Novgorod, the merchants are feasting in a gorgeous palace and Sadko is bragging that he can bring to their land a sweet-voiced bird of happiness. They laugh at him, but he is offered help by the Ocean King's daughter, who is mesmerized by Sadko's singing and is in love with him. The hero is destined to visit many lands in his search of the bird.