The legend of Shaka Nyorai, a historical figure known for his bravery and enlightenment, is retold in a fantasy setting where Mara, the embodiment of earthly desires, forms an alliance with the devil to bring about destruction. This alliance sparks a response from Taishakuten, Bonten, and the Thirteen Buddhas, who join forces to counter Mara's attack. The conflict unfolds as a clash between light and darkness, with the fate of humanity hanging in the balance.