The flames of romance have been extinguished for the couple Woo-jin and Samuel, who are devoid of money, children, and intimacy. To make matters worse, the value of their once-rising building begins to plummet as soon as they become the owners. Just when life seems to be hitting rock bottom, an unexpected opportunity arises... "Let's not live like this anymore and live mischievously." They start a unique business venture, catching adulterous couples to earn money! From workplace affairs, affairs among the middle-aged, to homosexual affairs, which unfaithful couple will they catch today?