Six months after his exile, Bruce Banner returns to America, haunted by a darker alter ego—the Grey Hulk. General Ross hires elite operative Emil Blonsky to hunt him down, but Blonsky’s obsession leads him to ally with rogue scientist Samuel Sterns, undergoing a transformation into the monstrous Abomination. As Bruce reunites with Betty and grapples with his fractured mind, he must face both Abomination and the newly born Leader in a battle that threatens global devastation.