On a scientific expedition in the Bermuda Triangle, Doc's experimental equipment awakens and possibly enrages the submerged ghost of Major Tom, a test pilot who crashed in an experimental aircraft designed by Doc's father.
When the Venture Family visits Tijuana for a lecture Dr. Venture is giving at the (community) University of Mexico, the dastardly Monarch weaves a cocoon of villainy that leaves the Venture brothers trapped in his clutches.