The Shaman Fight, a prestigious tournament pitting shamans from all over the world against each other is held every five hundred years, where the winner is crowned Shaman King. This title allows the current incumbent to call upon the Great Spirit and shape the world as they see fit.
Manta Oyamada, an ordinary middle school student, meets a boy who introduces himself as You Asakura, a Shaman-in-training, and demonstrates his powers by teaming up with the ghost of six-hundred-year-old samurai Amidamaru to save Manta from a group of thugs. You befriended Manta due to his ability to see spirits, and with the help of Amidamaru, they set out to accomplish You’s goal of becoming the next Shaman King.