Destron mutant Chameleon shoots Yuki Joji, but Kazami Shiro takes the bullet. Soon Shiro becomes unable to control his strength and becomes a menace. Meanwhile, Chameleon's human form uses a naive country girl to ensnare the vulnerable Shiro. In order to remove the Vatal Bullet from Shiro's skull, they must infiltrate Destron's Tokyo outpost. But, Marshal Armor and Chameleon are waiting to welcome them…