Episode Title:The Magic School Bus Ups and Downs.Episode Description:The talk show reporter Gerri Poveri is reporting that there is a monster in Walker Lake (apparently based on the Loch Ness Monster, as it is also plesiosaur-like). The class is very eager (especially Wanda) to find it. Phoebe also wants to find the monster so she can feed it. However, the bus' automatic sinking button is broken. They will have to find some other way to get it to sink. They succeed by adding weight and "crumpling" the bus. However, at the bottom, they discover that the monster was a fake; Gerri Poveri made the story up to increase her ratings. Now they will have to make the bus float again, so they can tell the truth to the public.