The smooth sailing of a couple's life comes to an abrupt end one day. The husband, who runs a company, is betrayed by a friend who lends money at high interest rates and ends up with a massive debt, leading to bankruptcy. Yumi, the wife, wants to return to their happy times and decides to meet the moneylender in secret. 'If you want to save your husband, be my woman on weekends!' Thinking that she just needs to endure it herself, Mai makes up her mind to offer her body. From that day on, humiliating weekends begin as a surrogate meat puppet until she gets pregnant...
