Moko wakes up in an unfamiliar room, disguised as a maid. With only a vague memory, she finds herself pinned down by a man named Ichijo who appears before her... How did she end up in this situation? She traces her memory and remembers the circumstances. Moko is a female university student living alone with her younger brother Yugo. Yugo borrowed money from a loan shark and was unable to pay the interest, so he offered Moko to a thug who was demanding repayment... They take Moko into custody and train her to be a creampie maid...