A young Yeti escapes from a compound in Shanghai owned by wealthy businessman Mr. Burnish (Eddie Izzard), who intends to use him to prove the existence of yetis to the world. Meanwhile, teenager Yi (Chloe Bennet) lives with her mother (Michelle Wong) and Nai Nai (Tsai Chin) in an apartment building. She lives a busy life and neglects to spend time with her family and her friends, basketball fan Peng (Albert Tsai) and his tech-savvy and popular cousin Jin (Tenzing Norgay Trainor). Yi is also a violinist who misses her late father, who was also a violinist.
One evening, Yi encounters the Yeti near her cubby house on the roof of her Shanghai apartment building, which she names “Everest.” While hiding him from Burnish Industries’ helicopters, Yi gains his trust by feeding him Baozi and treating his wounds. Yi learns that Everest wants to reunite with his family on Mount Everest while Everest learns about Yi’s desire to travel across China. When Burnish Industries’ private security forces closes in on Everest’ hiding place, Everest flees with Yi. After narrowly escaping a Burnish helicopter at the Oriental Pearl Tower, Yi and Everest flee on a ship carrying red cola cans, followed by Peng and a reluctant Jin.
Yi, Everest, and the boys reach a port in southern China and travel on a truck. After their crate falls off the truck, they end up in a forest. There, Everest awes the humans with his mystical powers of stimulating growth among blueberry plants. Meanwhile, Mr Burnish and the zoologist Dr. Zara (Sarah Paulson) continue the hunt for Everest. Following Everest and his human friends’ trail, they catch up with them in the Sichuan region but Everest uses his power to cause a plant to grow to a gigantic size. While Yi, Everest, and Peng manage to escape on the wind-blown shoot, Jin is left behind and captured by Burnish Industries’ Goon Leader (Richard Dietl).
Despite Dr. Zara’s outward love for animals, Jin learns that she is planning to hunt down the yeti to sell it. He also learns that the seemingly cold–hearted Mr Burnish has a soft spot for animals including Dr. Zara’s pet albino jerboa Duchess. Meanwhile, Yi, Everest and Peng reach the Gobi Desert where they befriend several tortoises, who gratefully accept their giant shoot. Later, they travel to a town on the banks of the Yellow River where Burnish Industries corners them. Peng helps them escape by unleashing a yak stampede. With the help of Jin, they escape across the Yellow River to a field of yellow flowers, which Everest causes to blossom to gargantuan sizes.
Continuing their journey, the humans and Everest eventually reach the Himalayas. While crossing a bridge, they are trapped on both sides by Burnish Industries’ forces. However, Mr. Burnish experiences a change of heart after seeing Everest protecting the children causing him to experience a flashback to his first encounter with the yeti which was protecting its young. Still seeking to sell Everest, Dr. Zara injects Mr. Burnish with a tranquilizer before tranquilizing Everest as well. When Yi tries to protect Everest, Dr. Zara throws her over the bridge. Burnish Industries then departs the mountain with the captive Everest, Peng, and Jin in tow.
However, Yi manages to cling on to a rope. She then uses her violin, which Everest has magically repaired, to summon ice which reinvigorates Everest, who breaks free of his cage. Dr. Zara attempts to kill Everest out of anger, but the attempt results in the poacher’s own demise along with the Goon Leader the avalanche that is triggered.
To protect Everest and the yetis from humanity, Mr. Burnish agrees to help Yi, Peng, and Jin keep his existence a secret. Yi, Peng, Jin, and Everest continue the journey to Mount Everest where they reunite Everest with his family.
Returning home to Shanghai with the help of Mr. Burnish, Yi spends more time with her mother, grandmother, Peng, and Jin.
Another cute animated movie perfect for a family movie night but easily forgettable.