Liz has disappeared and the trail leads to Herp Haven, which is some kind of spa for reptiles. There, they see a woman named Mrs. Westlake ask for her turtle to be "toasted and stuffed, just like the last one". They decide to lead a rescue mission to find Liz, on which they learn about reptiles and how they need to move from place to place to get comfortable because they are cold-blooded, which comes in handy, as Ms. Frizzle has turned them into some.
