Sang Dan, a Tibetan teenager who ran away from home, only wanted to go to Kumbum Monastery to learn how to make butter. On the way, he met Tang Yu, a peer who ran away from his parents. The two teenagers met various adults on the way together, including Tang Yu's parents who came to pursue their son. At the end of this journey, whether or not the two teenagers fulfilled their wishes, they both gained more important things.
