Kotaro looks for his step-brother Nobuhiko Akizuki and plans to track down Golgom's headquarters.

Kotaro investigates a bizarre string of abductions in conjunction with a scheme by Bishium to bring him down.

A cycling friend of Kotaro becomes the subject of Golgom's mad doctor experimenting to find a weakness to their escaped subject.

Kotaro investigates suspicious auto accidents leading to the victims being used for Golgom's army for causing chaos throughout the world.

Kotaro fights to stop the abduction of tuna by Professor Kuromatsu in order to gain an extract to improve the power of the Golgom mutants.

Bilgenia takes the guise of the doomed Professor Kuromatsu in order to lead Kotaro into a trap for his defeat.