The younger sister's friends come over after hearing that they can see the sex next door from the older brother's room. When the sex starts, they can't tell their friends, but they get so excited by the vivid scene that they wet their panties. Then, unable to contain themselves, the friends start secretly seeking their older brother's dick. This leads to sex swaps with the friends who come over almost every day. They even have a dream fivesome with all the horny friends!