Sisters Kumi and Kaori meet every year at the cottage. However, this time, the women have additional company.

Present are Tsuyama, who is Kaori's fiancé, and workers repairing the cottage, including a man named Takatsuka. Soon, both sisters, fascinated by the worker, start fighting for his favor. But nobody knows, that conflict between women has a much deeper source, than only competition for love, and many uncomfortable secrets begin to emerge.