The story of two men and two women, of entirely different tastes, start living together by chance. Their sweet little cohabitation begins!

Byung Do, his brother who lives like a scoundrel and was close to detective Kang Pil comes back after being stabbed by 'Submarine' ten years ago. A contractor on Jeju suggests that if there's someone who wants to find someone, one can earn a lot and so, Kang Pil who was financially challenged accepts the requests and heads to Jeju island. However, there are many suspicious things about the missing director who the contractor wants to find. There was a situation in which he was involved in "win-win manipulation" in the K3 League and even arranged "sex trafficking" for undergraduates in junior soccer classes. And the more they investigate, the more secrets are being revealed...

After losing both her parents, Failan emmigrates to Korea to seek her only remaining relatives. Once she reaches Korea, she finds out that her relatives have moved to Canada well over a year ago. Desperate to stay and make a living in Korea, Failan is forced to have an arranged marriage through a match-making agency.