On the eve of her wedding, Shang You, a young woman from the Holy Spirit Tribe, unexpectedly rescues Si Yuan, the Dark Lord of the Underworld Tribe. However, on her wedding day, her entire tribe is wiped out. To resurrect her people, Shang You infiltrates the Underworld Tribe and unexpectedly falls in love with her enemy, only to later discover that her real enemy was someone else all along.
