During the Korean War, a massive sum of money vanished—only to resurface 60 years later, triggering a high-stakes chase around the world. Jin Yi, who seems innocent, has secret motives for getting close to Ji Woo, but unexpected feelings complicate her plans. Meanwhile, Kieko, a famous Japanese singer, is also drawn into Ji Woo’s life—unaware that her father, Hiroki, is not just a businessman, but a powerful yakuza. Caught in a dangerous love triangle, the question remains: who will win Ji Woo’s heart?