Sol Gon-chan, at his grandfather's request, searches for his missing granddaughter. But his search is unsuccessful, and his grandfather's health is getting worse and worse. Fate brings him together with Ju Yu-rin, who works as a tour guide for Japanese and Chinese tourists. But she doesn't have enough money to pay off her father's debts. Therefore she is willing to go to almost any length for money. In addition, she must hide from the people to whom her father owes money. After a brief acquaintance, Sol Gon-chan decides to hire Ju Yu-rin to pose as his cousin, because she has a talent suitable for this—she lies very well.