The Yetis are sick! Alison Liv Isner's latest adventure couldn't come at a better time. It's nearly Christmas, and she's missing her mom more than ever. She's been studying her mom's journal just like Chicaletta-such a wise monkey-told her to, so she'd be prepared. Although, as Ali finishes the book, she realizes not all expeditions are fully mapped out and there's a lot left to chance. In her past three adventures, she's already encountered countless booby traps, giant ruby-eyed tarantulas, mummy crocodiles, vegetarian vampires, and of course, The Geese, with her five talking animal friends. Saving the world from complete devastation has been rewarding, but gaining confidence and learning more about her mom has been her favorite part. Has all her training been enough to face the Yetis and other mythical creatures that await her in Mount Everest? Join Ali, Chicaletta, Figgy, Bait, Glenda, and Tristan as they trek through an icy mountain in Nepal, laden with challenging obstacles, bigger tasks, and touching connections as they fight to save the Yetis.