You only live once. Jeong-min lives everyday in gambling debt and sex. He finds out his rich twin brother is missing and plans to take his place but his plans get complicated when his brother's sister-in-law Sae-eun appears. Jeong-min and Sae-eun who loves him start living together. Will Jeong-min overcome Sae-eun's seduction and put his brother's wealth in his hands?
Yoon Se-na
as Joo Sae-eun (주새은)
Ah Ri
as Chae-ran (채란)
민도윤
as Park Jeong-min (박정민)
Sin Seong-hoon
as President Choi (최사장)
Lee Yoo-chan
as Team leader Sin (신팀장)
Jang Ji-eun-I
as Min Seon-woo (민선우)
