The game is set an undisclosed amount of time after the first installment in the series, Jumping Flash!. After Robbit thwarted Baron Aloha's plans to take over Crater Planet (events from the first game), Aloha flees for his life and returns to his home planet, Little Muu. While planning his revenge, however, Aloha's turn to face the fear of having his planet attacked comes. A hostile alien invader known as Captain Kabuki (voiced by Lorelei King) descends upon Little Muu and starts taking it apart, piece by piece, contrasting on what Aloha himself had once tried to do to Crater Planet in the first game. Aloha flees the onslaught in his space pod, and lands on an asteroid far away from Little Muu, where he calls for help from his sworn enemy, Universal City Hall. Once again, Robbit is dispatched to help, and manages to free the parts of Little Muu which Kabuki has taken, and ultimately faces Kabuki one-on-one in mortal combat. Robbit defeats Kabuki, resulting in the latter escaping.