In a superpowered society, there is nothing ordinary about evil anymore. 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.

When you're not a licensed hero, sometimes you need all the help you can get. For Koichi, unexpected-but not entirely unwelcome-assistance comes in the form of Makoto Tsukauchi, one of Koichi's friends at school. Makoto's got a self-confident vibe that makes Pop Step more than a little anxious and...jealous? Meanwhile, out in the streets of the Naruhata district, the scheming bee user Hachisuka continues her distribution of the instant villain drug, Trigger...