Every year in Japan, over 10,000 unexplained deaths and missing persons are recorded. In the majority of cases, human negative emotions are the cause. Suffering, regret, humiliation: their accumulation in one place provokes often fatal curses.
This is what Yuji Itadori, a high school student and member of the spiritualism club, will discover to his detriment. He does not believe in ghosts, but his extraordinary physical strength is a valuable asset for the group's missions... until one of them goes wrong. The relic they unearth, the severed finger of a millennial creature, attracts monsters! The young man does not hesitate for a second: he swallows the relic to ward off the evil!
He is possessed by Ryomen Sukuna, the famous two-faced demon. Against all odds, Yuji manages to regain control of his body. It is unprecedented! Despite this, he is sentenced to death by the exorcist organization... A sentence that can only be postponed under one condition: to find and ingest all of Sukuna's fingers to eliminate the threat once and for all. And for that, the teenager will have to initiate himself into the occult and mysterious art of exorcism!