This is the story of three foster brothers who awake into a destroyed New York after a life-changing explosion destroys their home. Separated from their family amidst the chaos that the explosion created, the foster siblings find that they posses newfound abilities, known as Stigmas, that may have been the result of the explosion. Upon attempting to find their family, they are attacked by strange, mutant creatures and are captured by an unknown organization whose intention for them is unclear. Upon their capture, the siblings attempt an escape, which merely turned for the worst. They are then saved by a mysterious man who goes by the name of Mr. Sun who agrees to help them find their family so long as they aid him and his organization, HARMONY, in their quest to seek out the culprits responsible for the terroristic attack on New York. Leaving them with the choice to either hunt or fight, the siblings begrudgingly agree to join HARMONY. As members of the organization HARMONY, Kyle, Marcus, and Allen form the first response team of mutants in Machi City, New York, a man-made island that is the mirror image of New York City itself. During their time as operatives, they are assigned their first mission that leads to an encounter with a mysterious gang known as the Alley Rats who have managed to create a serum that transforms people into horrifying mutants. Time and time again, they would meet in battle, but it is not till Allen is captured by the gang that the team takes the fight to Alley Rat?s home?an abandoned factory in Manhattan. It is here that the team defeats the Rats for the last time and discovers new abilities with only more questions to be asked.