Just as Ash and friends arrive at a new island, their ears are met with cries for help. A family had built their house upon a Corsola nesting ground, and when a new, hyperactive Corsola arrived and frightened off the previous Corsola residents, the ground beneath the house weakened and the house was washed out to sea. The father and daughter who had been outside now look on helplessly as the other daughter is washed out toward a large whirlpool. Ash and Misty call their Pokemon to action and manage to save the young girl, but this proves to be only the first challenge of the day. As Ash and friends set out to help recollect the Corsola that had reinforced the foundation of this family's home, Team Rocket soon arrives and attempts to steal not only the Corsola, but also collections of local artwork made from Corsola horns, which these Pokemon shed regularly.