For fun and by the will of the witch Hagi, a hurricane brought twin brothers with wings, Tilda and Mukra, to Mount Katarangru. They soon thwarted the hunt of the werewolf Griganda. The witch turned into him when she was hungry. Haga became angry and decided to destroy the brothers. Knowing about their love of flying over the mountain, the sorceress caused a tornado. Tild got caught and was carried away to Galichya Mountain, and Mukr hid in a cave near the bats. The mice said that Haga had a magic ball. Mukr penetrated her lair, persuaded the ball to return his brother - and a new hurricane brought Tilda back. The brothers came up with a plan for their salvation and revenge. They lured Griganda into a geyser of boiling water and the witch died.