Tianyi and Tianmei, twin sisters who lost both parents, have lived together since childhood. When an earthquake occurred, their sister Tianmei escaped a disaster by exchanging identities with her sister. The heartbroken sister has since faced life as a sister, fulfilling her wishes and also meeting the love she had missed.

Raised in inland China, the protagonist Yangqing Lamu meets Baima, a young local guide, during an accidental trip to the plateau. The two travel deep into pastoral grasslands, embarking on a spiritual exploration of marriage, life and death, and morality amid the conflicts between dreams and reality, tradition and individuality. In the end, she achieves a profound reconciliation with both her homeland and her inner self in the vast wilderness.