Itadori Yuji is a high school student with exceptional physical abilities. On the night his grandfather dies he meets Fushiguro Megumi from Jujutsu High. Fushiguro had come there to retrieve the cursed object that Itadori had picked up, but it was currently in the possession of Itadori's upperclassmen who were trying to remove its seal. The upperclassmen are then attacked by monsters drawn there by the cursed object as Itadori and Fushiguro race to their rescue.

Itadori wakes up in an unfamiliar room and before him rests Gojo Satoru, a teacher at Jujutsu High, who declares Itadori's secret execution has been decided upon. Gojo presents Itadori with two options. He can be executed immediately, or he can hunt down all 20 of Ryomen Sukuna's fingers and die after absorbing all of them...

Itadori, Fushiguro, and Gojo head out to meet up with the third first year, Kugizaki Nobara. Thereafter they head to an abandoned building where Gojo tasks Itadori and Kugizaki with exorcising the curses lurking inside. Once inside the building Itadori and Kugizaki split up to look for the curses and Kugizaki faces off against a cunning curse that takes a child hostage.

An emergency breaks out at a juvenile detention center and Itadori, Fushiguro, and Kugisaki are dispatched to handle it. Their mission is to verify and rescue any survivors left inside with the curse womb that could develop into a special grade cursed spirit. Itadori and the others storm in to find a merciless reality waiting for them. Immediately thereafter, Kugisaki disappears and the special grade cursed spirit appears beside Itadori and Fushiguro.

After retreating outside the juvenile detention center, Fushiguro notices the death of the special grade cursed spirit. The very next moment, Ryomen Sukuna appears beside him, and rips Itadori's heart from his body to take him hostage. Fushiguro begins fighting Sukuna to prevent Itadori from dying when he regains control, but he becomes painfully aware of the difference in their strength.

Gojo stews in his frustration over Itadori's death. Both Fushiguro and Nobara are depressed by their teammate's death, but they begin their special training with the second year students to get stronger. Meanwhile, Geto and the others begin to make their move. And during all of that, the dead Itadori...