Sawamura, a contract part-timer dragged into a multi-million yen internet business, and Kamo, an office worker who lavished money on a beautiful club hostess, arrive at Cowcow Finance, the office of black-market lender Ushijima.
Tadaomy Ando became a yakuza boss at a young age. Because of his subordinate, he quit the yakuza. Now, he learns from Takashi Konaka the trade of illegal money lending and how to collect debts. Tadaomy Ando decides to become a loan shark. He has customers, but has a hard time collecting debts.
Tadaomy works as a loan shark. He hires Tukasa to work for him. One day, Tadaomy’s debtor, Okabayashi, asks to borrow two million yen more. Tadaomy trusts Okabayashi who has payed back sincerely, but Okabayashi suddenly disappears.
Tukasa works for Tadaomy’s loan shark company. He picks up more female debtors because of his appealing looks. One day, Erina appears in front of Tukasa. Erina used to be an idol and she now sings on the street.
S Finance's young female president, Fuyumi Asuka (Airi Kijima) ——— She likes smartphone games and cats, but she doesn't forgive anyone for money. Yohei Kiyohiro (Masamitsu Kaji), who was to work for her, entered S Finance without knowing that he was a loan shark, but he could not collect it well and was called a college graduate boy. However, he is entrusted with collecting a man from Fuyuumi. The man is a middle-aged man, Kojiro Masumiya (Takahito Asagi), who inherits money from an idol, Miwa Osumi, who cannot sell. He borrowed a lot of money from S Finance to make her movie. However, Yohei heard about Kojiro's circumstances and felt sympathy, so he decided to wait for the collection, but Kojiro started a plan to borrow money from Yohei himself.
A financial drama starring Yuka Ogura, who is widely active in gravure, models, and actresses. One day, Yuna, a bank clerk who lives a boring day, is asked by her sister to become a guarantor for her daughter's child support borrowing. Yuna responds for her sister's family, but it goes crazy for her life.
A classmate from Ushijima's middle school days, Takemoto, shows up. He was a kind man, but now is jobless and without a home. Adrift and unable to borrow money from Ushijima, Takemoto heads for Seiai Home where he can stay while doing work.
Haruo Sugimura is fresh from serving a two-year stint in prison for assaulting someone when he is recruited by a loan shark named Sakai to help collect money for a company called Minami Hachi Ban Kogyo, baesd in Osaka. Their rates are ruthless: 10% interest is added every 10 days. Their customers are desperate: a hostess who owes money to other loan sharks, a man made suicidal because his family don’t love him anymore. Haruo learns about the art of the loan shark as well as the dark side of peoples personalities.
When a greedy family pockets their son's disability payments with no intention of repaying their loan, Ando hatches a plan to get his money back.
Mirai Suzuki (Yuko Oshima) becomes responsible for her mother's debt which is owed to loan shark Kaoru Ushijima (Takayuki Yamada). To begin paying off her mother's debt, Mirai begins working at a dating cafe. Meanwhile, Jun (Kento Hayashi) is the ambitious and greedy company president for an event group. To borrow money, Jun visits Kaukau Finance owned by Kaoru Ushijima.
Ushijima runs Kaukau Fiance, a black market lending agency which scourges its clients with interest rates as high as 50% for 10 days. Ushijima chases down his debtors, who normally come from the bottom of society, with ruthless efficacy.