In the bustling city of Shanghai, a young girl named Yi stumbles upon a young Yeti on the rooftop of her apartment building. Realizing the creature has escaped from a wealthy financier named Burnish, who intends to showcase the Yeti for fame and recognition, and is being pursued by zoologist Dr. Zara, Yi names the creature Everest. Sensing his desire to return to his family on the highest point of Earth, Mount Everest, she commits to helping him reach his home. Joined by her mischievous younger neighbor Peng and his cousin Jin, an image-conscious teen, the trio embarks on an epic quest.

As they navigate through the urban landscape, the group builds a deep bond, encountering stunning landscapes and experiences that open their eyes to the vastness of China. They journey across multiple landscapes, from the Huangshan mountains to the Gobi Desert, all the while staying a step ahead of Burnish and Dr. Zara, who are in relentless pursuit. Yi, Peng, and Jin learn about friendship and bravery, as they use their wits and Yi's violin playing - which mystically connects with Everest's magical abilities - to overcome the obstacles and protect their new friend from those seeking to exploit him.