Five years ago, Dailing's parents were brutally persecuted by Danpa of the Four Seas Group, and she herself was pushed into the sea by her childhood sweetheart, Angwei. Rescued by the skilled agent Sister Hua, Dailing underwent rigorous training and transformed into an elite operative. Returning to Thailand under the alias Feifei, she infiltrates Tann Palace to uncover the truth behind her family's tragedy. There, Angwei—haunted by guilt over the past—takes the initiative to approach her, and she seizes the opportunity to become his personal secretary. As they engage in a dangerous game of suspicion, manipulation, and hidden agendas, the feelings they once shared begin to resurface, rekindling a love neither of them has truly forgotten.
