While looking for a way back to Earth, the Hulks discover the Leader stowed away on board the ship. Retribution must wait as the Agents of S.M.A.S.H. h*e to fight Ronan the Accuser and his Kree soldiers to s*e an old foe: Ego the Living Planet. But when Galactus comes to consume Ego the Living Planet, the Agents of S.M.A.S.H. must put themselves at risk to s*e the lives of their two enemies.