Mekagojira no gyakushû

In the 1975 Japanese kaiju film Terror of Mechagodzilla, a submarine expedition to salvage Mechagodzilla's remains is thwarted by a massive dinosaur named Titanosaurus. Biologist Akira Ichinose (Katsuhiko Sasaki) becomes entangled in an investigation led by INTERPOL Chief Tagawa (Tadao Nakamaru), which uncovers the work of reclusive mad scientist Dr. Shinzô Mafune and his mysterious daughter Katsura. As Katsura's life becomes intertwined with the resurrected machine, she secretly undergoes surgery to become a cyborg designed to control Titanosaurus.