Bone takes Trumpee ans Snaree, both very excited, to the valley of the rubbery pumpkins, where the Tympani twins live. Maestro Nomo told them that Tymp and Tump invented a very funny game that consists of jumping very high and bouncing on the pumpkins so that they can fly and never touch the ground or hurt themselves. They arrive on the valley where these strange pumpkins grow; on the pumpkins the twins tied a protective barrier.