Godzilla vs. Megalon

In this enthralling science fiction adventure, Goro Ibuki, a brilliant inventor, brings to life a towering humanoid robot named Jet Jaguar. However, when Jet Jaguar is abducted by an enigmatic undersea civilization known as the Seatopians, it becomes clear that his purpose has been hijacked. The Seatopians, suffering from the destruction of their society at the hands of mankind's nuclear tests, intend to exact vengeance through Jet Jaguar as their guide. As a colossal creature called Megalon emerges to wreak havoc on Earth's surface, it is up to Jet Jaguar and those who created him to prevent this catastrophic plan from coming to fruition.