Scooby and Shaggy are alerted through Uncle Albert and Robi that Dr. Phineus Phibes is planning to use a heat ray to melt a massive glacier on Mount Zeryodelwietzen (the white yodeler) in Switzerland.   Phibes plan is to get revenge on a group of scientists who once mocked him, and who are holding a global warming conference at the base of the glacier. Scooby and Shaggy fly to Switzerland in the Mystery-Jet, discover that Phibes is hiding in his cloud ship lair above the glacier and, after defeating his pigtailed Swiss assassins (Misty Swiss and her evil bimbo dog Carla), derail Phibes' plan and save the day. In the meantime, they also find time to re-carve the face of the glacier to look exactly like Scooby.