Aika, a college student who has returned home during summer vacation, is delighted to see Haruna, Yankee, and Nana. All four grow up in families where premarital sex is prohibited. Four childhood friends with no sexual experience spend the summer trying to lose their virginity. Haruhi Oguri, the female director who was the first to challenge the pink film, vividly reflects the sexuality and life of women with different complexes and habits, and this work of her was highly praised.

Sakura Kurata and Kosuke Tsukamoto are members of the movie club at their high school. They then organize a movie shoot which which revolves around the urban legend and occult game "hide-and-seek alone". The game involves a ritual with a doll to contact the dead. The students persuade a teacher to allow them to shoot the movie at midnight in the school. The students begin their film, but they soon experience a lot more than they expected.