Big Ear Mask was placed in charge by Golden Mask of a plot to create "Bacterial Gas Z", a special gas that can kill and wipe the flesh down to the bone, and distributing it through the massive blimp Tutankhamen with the plan of using it to strike a jetstream for global distribution of the gas to kill the world's population. The Gorengers sneak through the Black Cross' base in order to destroy the blimp and the massive Sphinx storage area it was hidden in to prevent the plot from going fully through. Big Ear Mask decides to take the rest of the Bacterial Gas Z for an alternate plan to wipe out Tokyo, but the Gorengers halt her before she can go through with it. The team ultimately use Gorenger Hurricane to become an earplug to smash right into her face before exploding and killing her. Ep.