In an aging housing complex where young girls' lewd acts are brazenly carried out in broad daylight, the demolition has been decided, and entry has been prohibited. There is a hangout called 'Secret Base' for the girls in the housing complex. Only the small girls who have received permission from the men called 'uncles' are allowed to enter. In the accumulated footage, there are images of innocent girls playing and girls being teased by the 'uncles'... During summer vacation, girls with suntans unwittingly experience sexual acts and lose their virginity as an extension of their play.
