I'm an ordinary office worker with no real future. I wake up in the morning... go to work... eat... drink... sleep... and there's nothing fun to be found every day... Then, one day, I skip work and pass out drunk in the park, where I'm taken care of by a mysterious, beautiful girl named Amu. This encounter led to us becoming close and starting a relationship. I would go to Amu's house and spend happy hours having sex. I thought our daily lives would continue like this forever... But one day, Amu invites me to the basement storeroom of the building, where I find some strange men. "I'm accepting all of these men's dirty sexual desires," Amu says, and begins kissing the men without hesitation. An unbelievable reality suddenly appears in my rosy days. The ritual known as a bukkake orgy is about to begin...