Bioman must rescue two boys who possess an ancient treasure map that leads to Biobase, making them targeted by Gear.

After a Space Beast throws them off Shuttle Base, the Changeman scramble to get their ship back as Sayaka tries to protect it from the inside.

8mm film by Yukiyasu Shimada, summer 1992.

The Changeman must work with an earthquake institute to prevent Earth from being destroyed in a sea of fire by the Gozma.