Masao and Maron are former colleagues at a certain consulting firm, and have been married for two years. One day, Masao is scolded by Suzuki, an employee of a client company, for the damage he caused due to his mistake. Considering the situation at the company, Masao is unable to consult his boss and ends up accepting Suzuki's proposal to have Maron work for free as an accountant at the company. However, this was the beginning of a despicable trap cunningly set up by Suzuki...