"Do you want to do it...?" 　　The fatal seduction of...the "Challenge Game" 　　Florist Ae-ran (Vicky) and forensics investigator Min-ho (Choi Ryeong) from the Public Prosecutors Office both have a family that everyone wants. However, Min-ho cant handle bed time so Ae-ran starts a challenge game in which she seduces and has sex with strange men. One day, Ae-ran and Min-ho meet Alex (Choi Hyeon-ho) at a tango cafe. Alex is interested in Ae-ran and approaches her while Ae-ran takes interest in Alex who is more handsome than her husband. Min-ho later witnesses them in action and gets angry when he finds out the man Ae-ran seduced is Alex. Min-ho feels nervous because he finds out Alex isnt just a game partner and approached him for a reason. Min-ho tries to get rid of Alex but Alex chokes Ae-ran and Min-ho even more and feels catharsis. The game they started is turning into a catastrophe...