Chainsaw Guy is the product of a broke young man and a chainsaw dog monster. Denji, a young man in need of money, will do anything, including using his beloved devil-dog Pochita to hunt down devils. But when someone he trusts betrays him, his world is thrown upside down. Denji has now changed completely and is now Chainsaw Man thanks to the power of a devil inside of him! Denji will risk everything in a battle with the terrible Bat Devil in order to accomplish the greatest ambition in human history—to touch a breast. But will he truly be pleased after he gets what he wants…?