Heroes, trained and licensed to protect and defend the public against supervillains, stand above all the rest. Not everyone can be a hero, however, and there are those who would use their powers to serve the people without legal sanction.

But do they fight for justice in the shadows, or for reasons known only to themselves? Whatever they fight for, they are called...vigilantes. The nightmare in Naruhata continues as Koichi goes toe-to-toe with Number 6, who has transformed into a horrific predator bent on ending the Crawler's life!

When the situation gets a little too hot to handle, Koichi realizes this may be a job for real heroes. Until they arrive, though, the battle is up to him-with an assist from Knuckleduster! But the evil looming behind Number 6 is still spurring on the vengeful villain, who has yet to unleash his final form.