Yanmei is the last daughter of the fallen Yan Clan, brought to the imperial capital as tribute after her family is destroyed under Emperor Tianyu’s expanding rule. She enters the palace with one goal, find the truth behind her clan’s downfall and take revenge on the emperor responsible.But within the imperial palace exists a feared tradition known as “The Emperor’s Night,” where one concubine is selected to spend a single night alone with Emperor Tianyu, a man known for his ruthless and emotionless rule.Yanmei is chosen.Thrown into the emperor’s private chamber, she expects death or worse. Instead, she discovers cracks in the monster the empire fears. Emperor Tianyu is not simply cruel; he is a man bound by a hidden burden tied to a single night every year, a night that leaves him emotionally broken and distant from the world.As Yanmei survives assassination attempts inside the harem and navigates deadly palace politics, she begins uncovering fragments of truth about both Tianyu and her clan’s destruction. The emperor who should be her enemy begins protecting her in ways she cannot understand, while her hatred slowly collides with uncomfortable truths.Eventually, Yanmei discovers the secret behind The Emperor’s Night, a recurring anniversary tied to a past tragedy that shaped Tianyu’s entire reign, and a hidden truth that connects directly to the fall of the Yan Clan.Now faced with the man she swore to kill, Yanmei is forced into an impossible choice: fulfill her revenge and risk destroying the empire, or spare the emperor and accept a truth that may rewrite everything she believed about her family’s death.