Jimmy derives his power from a mysterious glove he found in a puddle as a child. He soon realized that this glove gave him fantastic powers to interact with life forms called "Yôkai", deities from another world. Human and Yôkai are linked; Jimmy's ghostly soul is called Sam.

Jimmy and Sam have repeatedly come to the aid of the inhabitants of both worlds, preserving the balance necessary for the survival of this universe, until one day their mission cost the lives of several linked humans and Yôkai...

 

Since that day, Jimmy and Sam have lived on the bangs.