He's big, he's bad, and you don't want to make him mad. He's Grenade, a hulking paramilitary super-soldier sent by the U.S. Armed Forces to stop super-team Catalyst's effort to secede their home, Golden City, from the rest of America.

Will the combined power of the Agents of Change be enough to overcome the military's mighty man-mountain? Also: Brothers Mark and Matt Morrisette learn that the Rebel powers they share may be too much for both of them to handle.