When Yuuta Okkotsu was a child, he lost his best friend Rika, who he had promised to marry, in a car accident. Since then, Rika's monstrous ghost has followed Yuuta everywhere and hurts those around him, so he wishes to be isolated to prevent others from being hurt. However, when Satoru Gojo captures him during an incident, he tells him to enroll in Jujutsu High School where he can learn to control Rika to help people instead.

Yuuta then begins his Jujutsu sorcerer studies along with weapons expert Maki Zenin, unique spellcaster Toge Inumaki, and Panda, a talking panda bear. Yuuta then realizes there's more to the world of Jujutsu sorcerers than just evil spirits.

*Jujutsu Kaisen 0 was the protoype of what became Jujutsu Kaisen as we know it now. The designs were then adapted and some even switched to other characters. This movie will reflect all the original deisgns from Gege Akutagawa.