Liam, Maya, Jordan, and Sophie once lived normal lives until they received invitations for the prestigious Genus Program. It was only after it was too late that they learned the horrible purpose of this project, in which each of them and countless others were experimented. All four were completely altered, completely changed in ways they could not described, and each given a moniker to describe their new forms. Liam as Herald, for his newfound ethereal wings. Maya as Echo, for her overly enhanced hearing. Jordan as Razorback, having been infused with the dna of a hog. Sophie as Oracle, whose prophetic visions cause her no end of trauma. But fortune has come in the form of a power outage, and now they're on the run. Their handlers will not allow them to share their misdeeds, but just as quickly the teens won't allow them to get away with what they've done. They know of the other bases, and they will find them. No one else, child or otherwise, will have to endure what they were forced to. A new star is rising the Grummverse, four total strangers with hearts pure and spirits strong. They are...H.E.R.O!