Chen Mo, an ordinary high school student, accidentally traveled to the Pokémon world, only to find that the elves here were far more dangerous than in the anime. During the ceremony to distribute the initial elves, he was supposed to get an ordinary green caterpillar, but instead hatched a mysterious variety monster. Not only can this ever-changing monster transform perfectly, it can also acquire properties by devouring non-organic matter. As Chen Mo explores the world, he gradually discovers that the existence of himself and the Variety Monster seems to be related to the abnormal energy fluctuations in the world...
