Dante reluctantly accepts a mission from his old acquaintance, Lady, to investigate a motorcyclist known as "Red Eye", who she suspects is a demon. The investigation leads them to Vincent, a professional racer who wants revenge on Red Eye for his brother's death. Lady gets Dante to challenge Vincent to a race, during which the latter is drawn into an illusion and nearly killed before Dante and Lady force him off the road. Red Eye, who turns out to be a cyclopean demon disguised as a motorcycle, fights them before Lady is able to destroy it with her rocket launcher. To Dante's displeasure, the money he earns from the mission is seized by Lady to cover his debt to her. Vincent arrives and asks Dante for a rematch, which he accepts on the condition that he loses a single round of billiards.