When a brother-in-law who lives in the countryside secretly stays at his sister's dormitory in the city, he is easily found by the other residents! However, the single flight attendants are busy with work and have no outlet for their sexual desires, so they are excited by the extraordinary presence of a man! When they see an erect penis in front of them, they lose their sense of reason! With a boldness that is unimaginable from their neat uniforms, the flight attendants who would normally never pay attention to them are fucking them anytime, anywhere under the same roof, and their penises never have time to dry!