Su Nianqing partners with her brother-in-law, Huo Hanjin, in a plot to disrupt a wedding. After a tragedy leaves her with memory loss, she uncovers shocking truths about her past and her complex relationship with Huo Hanjin.

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 disguises herself as Meng Li, a deer demon, and infiltrates the Underworld Tribe to steal the Dark Lord's Amber Heart. During their time together, she unexpectedly falls in love with her enemy. Despite this, she still chooses to take Si Yuan's heart to revive her tribe, only to later discover that her real enemy was someone else all along.

In the early Republic era, dancer Su Manli, seeking revenge for her father’s death, meets Chen Bi, a noblewoman whose family was slaughtered. To uncover the truth, Su Manli adopts Chen Bi’s identity to infiltrate the influential Haitang Society and get close to its key figure, Yang Ziqin. When Yang’s true motives emerge, the three unite to confront the real mastermind behind their shared tragedies.