Based in Chinese opera, the film tells the story of a young scholar in the Tang Dynasty, Li Yi who travels to the capital Changan to take the national civil examination. During the Lantern Festival, he encounters Huo Xiaoyu in the night market and picks up the purple hairpin she leaves behind by chance. Using the hairpin as a token of love, Li proposes to her on that same night. However, “the course of true love never did run smooth.” With the assistance of a mysterious man in the yellow robe (Huangshanke), together they have to fight against the wicked plot of Official Lu.