Deep Story.

Hostess Aki has drinks with men and gets allowance in return. She survives day by day until one day she hears from Saiki that there is someone looking for a fake marriage partner. Aki thinks about it, but in the end decides to do it and marries Jin-il when she is on the verge of being evicted. They become a married couple but Jin-il's girlfriend visits from Korea and they have sex every night...