Shaman King follows the adventures of a 13 year old boy named Yoh Asakura. Yoh has a special gift- he can see ghosts. Yoh is a Shaman, a link between the living world, and the afterlife.
There is a great tournament every 500 years, in which Shaman from all over the world compete for the crown of Shaman King. After they have gained that title, they become one with the King of Spirits and gain unimaginable power, to save the Earth from peril.
The Shaman fight side by side with their guardian ghosts. In Yoh's case, his is a 600 year old samurai warrior spoken of in legend as a ruthless killer, called, Amidamaru.
To become Shaman King, Yoh must learn to become one with Amidamaru, and fight off every Shaman that comes his way. But the fighting starts much sooner than expected....