Dev, Tuna, and Hiu are back for another summer of mischief, fun, and adventure on the heights of Everest! Fed up with Dev's mischief, his parents banish him to Everest Base Camp to join his dad on a boring research field trip. A summer of itchy scarves, ice cream that's just ice, and endless worksheets--what could be worse? Hiu invites Dev and Tuna to YetiVille, which they discover is plagued by a terrible smell from The Dump, a pile garbage and waste left by careless climbers on Mt. Everest. Now, it's up to Dev, Tuna, and their friend Joon to help the Yetis AND still have the best summer ever. What could possibly go wrong?