Framed by the Second Prince Xiao Jin, the Duke of Zhenguo's estate is slaughtered, leaving only the heir, Shen Jinglan, alive to swear vengeance. Badly wounded and wandering through a bamboo grove, he is rescued by Su Xueqi, the prime minister's daughter, with whom he shares a childhood bond. Prime Minister Su Jingyuan recognizes his identity yet conceals it, assigning him to serve as Xueqi's personal bodyguard. Shen Jinglan finds himself falling for Su Xueqi while simultaneously harboring suspicion toward the Su family over the blood feud. As assassin attacks escalate and loyal remnants emerge, the truth comes to light: Su Jingyuan was coerced by Xiao Jin and had secretly saved Shen Jinglan, intending to join forces to uphold the rightful succession and protect the late emperor's decree. At Xiao Jin's treacherous banquet, chaos erupts, and loyal retainers alongside Su Jingyuan make the ultimate sacrifice.

The Duke's Heir: Undercover Love (31 episodes) - AllShorts