Abandoned by her birth parents in a remote mountain village, Crystal grew up alone. She meets and relies on Willow, who also faced a difficult life. They make a pact to leave the mountains through education. Crystal faces obstruction from her birth parents, but refuses to give up. To escape an arranged fate, Willow leaves, yet silently supports Crystal's studies. Crystal gets into a university in Shanghai and establishes herself, waiting for Willow's return. The two stay together.