When residents of his village are turned into trees, Yugo decides to look for a cure. He is accompanied by his new friends: Percedal - a warrior looking for adventures, Ruel - a greedy treasure hunter ...

Yugo is reunited with his father. Evangelyne believes that Percedal isn't dead and that she hears his voice. Ruel gets in trouble while looking for treasure underground.

Qilby tells Yugo his story and what he plans to do with the Eliacube while the other fight against Rushu.