Denji was a small-time devil hunter just trying to survive in a harsh world. After being killed on a job, he is revived by his pet devil Pochita and becomes something new and dangerous--Chainsaw Man!

When the whole world goes crazy from the Chainsaw Man Church's dark plans, Denji and Nayuta find themselves in mortal danger. Asa and Fami jump into the fray to attempt a rescue, but they're going to need to recruit new help if they want to have any chance of succeeding.