The plot will tell the story of a young boy named Yuji Itadori and his difficult fate, which has prepared for him the most difficult trials that he has to overcome. Since childhood, he was close only with his grandfather, and before his death, he told him something strange that he still could not understand, he ordered him to protect people, no matter what happens, and not spare any strength for this. The boy then did not understand what his deceased relative had in mind, what he wanted to say to everyone, but he forever remembered his words, although he did not attach much importance to them.
In the school section, he was involved in athletics, but despite all his athletic successes, more and more time begins to engage in the occult sciences and black magic. His friends also begin to study dark magic and comprehend its secrets and mysteries, they learn to call on the spirits of dead people, but no one really believes that this will really work. But soon, a strong shock awaits them, after which, the doubts in their minds will be completely dispelled and they will begin to take their new hobby really seriously. What awaits the heroes on the other side of the magical dimensions, what dangers are fraught with black spells in inept hands?