Hitomi runs a loan sharking business single-handedly. Known for her ruthless and merciless debt collection, she hides a deep sorrow—her husband took his own life after being crushed by overwhelming debt. One day, while pursuing a debtor who defaulted, she falls into a trap set by underground lenders and desperate borrowers, gets kidnapped and imprisoned, and is ultimately reduced to a sex slave. The story portrays her harrowing descent as she confronts this brutal reality.