It's summer vacation for the students of Astronaut Academy, and Maribelle Mellonbelly is throwing the best party ever on Beach Planet? Yes! But tensions rise when Hakata Soy's archrival, Rick Raven, arrives. And soon the whole planet is heating up--with a giant volcano threatening to blow its top! Unless they can work together to save the planet, the students of Astronaut Academy will be toast. But can they put aside their differences in time to turn the tide?