Destron forces Marine biologist Dr. Nakatani to create a powerful aquatic mutant, Pickaxe-Shark. The doctor escapes, but his creation is sent to kill him. Meanwhile, a chinpira exposes Kazami Shiro's secret identity to Junko, but is captured and transformed into Drill-Mole. As V3 battles Pickaxe-Shark in the open sea, Drill-Mole abducts Junko to force her into an unholy union!
Destron obliga al biólogo marino Dr. Nakatani a crear un poderoso mutante acuático, Pickaxe-Shark. El doctor escapa, pero su creación es enviada para matarlo. Mientras tanto, Junko descubrela identidad secreta de Kazami Shiro, pero es capturada y transformada en Drill-Mole. Mientras V3 lucha contra Pickaxe-Shark en mar abierto, Drill-Mole secuestra a Junko para forzarla a una unión impía.
