After consulting with the administrator, Bam succeeds in getting permission to take the administrator's test - if the pass, then Rachel will move on. For the test, Bam and Rachel are placed into an underwater Shinsu ball along with fish and must be captured by net dolphins and eaten by their queen to pass. The remaining participants must stop the net dolphins' enemies: the goblins - who control marsh worms - and striped ground pigs, from interfering with the net dolphins. They must also watch out for The Bull, a mysterious and dangerous creature that eats almost anything that moves...