Min-ho wants passionate sex and his wife Eun-kyeong says sex is just a verification of love.Min-ho wants unique sex again tonight but Eun-kyeong only wants the usual sex in bed.One day, Eun-kyeong gets sex toys at work. She doesn"t like them at first but she can"t get over the great feeling from the massage shop and starts touching herself. Min-ho sees this and he gets horny. In the end, they have sex that they will never forget.Since then, Eun-kyeong opens up to sex and that"s when her husband"s handsome friend Sang-wook appears. Eun-kyeong feels electrocuted even with the slightest touch by him and Min-ho starts to realize there"s something going on...