At first it looks that the hero is ordinary boy with a bit strange skin, but later we find out he can turn himself into a slug. The goal of the game is to collect all sweets, spells and keys and so get into the end of level. To reach all these things and goal you have to combine both human and animal forms. So when is some corridor too small, you use the slug form when some enemies need to be avoided you use another form once again. But be careful the shapeshifting is limited and you can loose level too.