Wahhaman, a robot soldier, was constructed by the Atlanteans over ten millennia ago. However, after being hit on the head, he lost all memory of his past. Presently, the android resides in modern-day Tokyo, where people mistake him as a missing piece of their lives. Though he can only chuckle before heading into battle, the follow-up episodes of Wahhaman offer more amusing and thrilling action scenes. As the plot unravels, a shadowy organization led by a man with scars becomes a formidable challenge for Wahhaman. The leader's intense animosity towards Wahhaman spurs him to dispatch numerous robots that transform to trap the heroic soldier, but each of his attempts fails.