Ai (Kuraki) and Mari (Kanan) are about to get married, and they go on a trip together as single sisters. The father of these sisters is an arrogant, wealthy man who uses his money to get what he wants, and many people hold grudges against him. Those who were once wronged by him have banded together, waiting for the time to take revenge. ...The time has come. The trip the sisters went on together was a trap set by those who wanted revenge...