Seraphina Chen, the number one assassin on the killer list, returns to her home country to repay Aunt Liu for saving her life and to fulfill her engagement to Ethan Chu, the eldest son of the Chu family. Seraphina Chen boards a plane back to Dragon Country, where Azure Dragon disguises himself as a flight attendant, attempting to seduce the protagonist. However, the protagonist doesn't take the bait, instead teasing Azure Dragon. After learning that the protagonist is the Sword Holder, both Azure Dragon and Jade Hong are shocked. Seraphina Chen exits the airport, sees Ethan Chu, and immediately rushes over to give him a bear hug. Willow Wei sees this scene from the side, feeling ashamed, indignant, and furious. On the way home, Seraphina Chen and Willow Wei argue incessantly, even getting into a fight. Vivian Qi, who happens to pass by, witnesses this scene, feels extremely jealous, and forces Seraphina Chen to explain. Seraphina Chen shows no weakness, using force to push back Vivian Qi. Afterwards, Vivian Qi harbors resentment, deciding to cut off the Linya Group's supply chain as revenge. After the Linya Group and Mr. Chu learn of this, they are enraged and decide to retaliate. Vivian Qi takes the opportunity to try and seize Ethan Chu, with both sides engaging in a tug-of-war and struggle. In a critical moment, Azure Dragon arrives in time, defusing the crisis. The unrepentant Vivian Qi unites various forces to attack Seraphina Chen, attempting to destroy Seraphina Chen and then marry Ethan Chu, only to learn that Seraphina Chen is not what she used to be, already an invincible existence in Dragon Country that Vivian Qi simply cannot deal with. In the end, Seraphina Chen uses her strength to repeatedly destroy the conspiracies of villains like Vivian Qi, expelling them from Dragon Country, and finally gets together with Ethan Chu.