After Rabirin, Rate and Asumi watch a volleyball television show, the three decide to take the others out to play beach volleyball. As such, the Healing Animals and the four girls head to a deserted island on a beach volleyball camp. While the others have fun playing, Nodoka struggles to keep up with the other three girls. Meanwhile, Guaiwaru arrives on the other side of the same island and infects a Tree Spirit to create a MegaByogen which he immediately subjects to intense sports training...