Douzhan Tianxia

A young man named Dafeng saves Li Huamei, who is critically ill after being targeted in a scheme. Dafeng is traveling to Kyoto to locate his older sister and coincidentally shares the same route as Li Huamei. During their journey, Li Huamei discovers her senior sister is Queen Qin Zhao, who has repeatedly sent killers after her. To uncover the truth, Dafeng and Li Huamei form a bond and face their adversaries together. As conflicts arise both in the realm and within the royal court, the pair becomes entangled in a dangerous plot. Dafeng is revealed to be central to unraveling the mystery at hand.