One morning on a commuter bus. A certain salaryman wakes up from a disturbing dream and realizes that he is being face-sitting by a high school girl. The inside of the bus is like heaven, with every sense of sight and smell filled with female students. They suck the man's lips, run their tongues over his nipples, lick and suck his erect cock, straddle his lower body and move their hips in time with the movement of the bus... Is this a dream or reality? The world of a strange high school girl harem.