The Sasaki couple, who run a sheet metal factory, worked hard while holding a loan for a newly built condominium that they finally got. - At that point, the parent company went bankrupt. - Stop lending from your bank. - In addition, her husband died in an accident. - Aki, who was struck by her tragic chain, wanted to protect only her sheet metal factory left by her beloved husband, despite her heavy debt. - Then, Yoshino, who works for an investment company, visits Aki who is worried about her cash flow. - Yoshino says that he will buy the debt on the condition of a certain transaction.