Miina has been swallowed whole, but Yarai has a plan that just may save her and subdue the beastly Chimera that has brought chaos to Sengoku's camp. However, as good as Yarai's plan is, it may not be enough to deal with a new, surprising element that comes into the mix. With some ingenuity and a bit of luck, Sengoku and his crew have come this far, taking on all types of monsters on this mystery-filled island, but there is still one beast more fearsome...

In order to save their sick teacher, Sengoku and the gang commence an all-out war to kidnap the island's only doctor, Nishikiori. However, the atrocious doctor uses his brainwashed servants to turn things around on Sengoku and his friends! The kids must think of an even better plan to outwit him, but will they make it in time? As they approach the pyramid for their final strike, the members of Sengoku's camp must once again take a stand against the...