She was sent to spy on him. Falling for him was never part of the plan. Hyewon Yoon works tirelessly to secure her future, but loyalty comes at a cost. Vice President Jiseok Ha makes her track every move of his cousin, Executive Director Taebeom Ha. Taebeom knows she’s spying on him. But instead of pushing her away, he keeps her close. What begins as a cold arrangement shifts into something unpredictable. Their worlds were never meant to intertwine, but the more they fight it, the more inevitable it feels. Is it just proximity -- or something deeper?