The premise here is that Rio Hamasaki is challenged with entering a men’s hotspring/bathouse wearing just a towel that get
smaller and and smaller as she goes through the challenges. It starts off with just her going into the hot springs with guys
wearing just a towel. Then her next challenge is she goes and gives a random guy a blowjob. Lastly she flashes and masturbates
in front of the guys and fucks a random dude. The duration of the movie is shorter than usual lasting just a little over an hour and a half.