Mark Next had everything: the top of Big River City, his family's empire, and a life of unshakable luxury. But in a single morning, paradise collapses. A secret "project" by his twin brother, Rayman, is accidentally activated, triggering the first atomic detonation in decades and putting a target on the Next family's back.

Now, Mark must summon every ounce of his training as a former elite Hellock soldier to do the impossible: get his brother out of the city alive