Synopsis：Top assassin Maya accepts a high-paying job to kill powerful elite Cassian so she can afford treatment for her gravely ill sister, but the mission unexpectedly fails and her identity is completely exposed. In secret, Cassian lives under a second persona as Finn, the frail and gentle second young master of the Hayes Group. Saved by a young Maya ten years ago, he deliberately staged the assassination attempt to draw her close and protect her. After the failure, Maya infiltrates the Hayes family as an undercover agent. While she slowly falls for Finn, she uncovers his true identity and realizes that Victoria, the family matriarch, is behind all their suffering and conspiracies. In the end, Maya and Finn join forces to reveal the truth, settle their past grudges, and choose to stay together.