Izumi and Aoi are nursery teachers at a nursery school. Izumi is actually a lesbian and fell in love at first sight with Aoi, who was hired at the same time as her. Today, they are having a party at Izumi's house, with the principal and Rie in attendance, to discuss a skit to be performed at the nursery school graduation ceremony, while her husband is away on a business trip. Rie, who grew tired of men due to the domestic violence of her husband who died 10 years ago, is also interested in Izumi and Aoi. The three of them drink plum wine and hold an obscene lesbian triangle party.