In the early days of his transformation into the Hulk, Bruce Banner is still trying to understand the creature he becomes when anger takes control. As the military hunts him and General Thunderbolt Ross seeks to eliminate the threat, Bruce finds rare support in Betty Ross, whose feelings make an already unstable situation even more complicated. Through escapes, confrontations, and painful memories, Hulk: Gray revisits the character’s earliest days and the fragile relationship between Bruce and Betty. The story focuses on fear, guilt, and the isolation of a man unable to fully control what lives inside him.