A battle is set to unfold in Tokyo: the Shaman Fight, a tournament occurring once every five hundred years where shamans—individuals who can command spirits—face off against each other. The winner becomes the Shaman King, the only person capable of contacting and controlling the Great Spirit, allowing them to reshape the world as they desire with its immense power.
While taking a late-night stroll, Manta Oyamada encounters his carefree classmate, You Asakura, who invites him to stargaze with some friends. To Manta's horror, these friends turn out to be ghosts from a nearby cemetery! Yet Manta's rare sixth sense, which lets him see these spirits, endears him to You. When You learns that his new friend was beaten up by a local gang, he decides to get revenge with the help of Amidamaru, a samurai ghost whose tomb was broken by the gang leader.
Soon, Manta discovers more about the spirit world, including the Shaman Fight, which his new friend You aims to win.