The Sound Stones

Vultureman attempts to make a sonic gun built around an ancient, natural weapon called a sound stone. He travels to Dark Side where the ruined temple of the sound stones is still guarded by stone gargoyles and a priestess named Soundora. Vultureman gains a sound stone for his device and reluctantly joins the LunaTaks to attempt to defeat the Thundercats. Lynx-O helps Panthro to counter the device with their own to stop their enemies from succeeding in their plan.