Reiko and Ryoko are two beautiful sisters who are very lewd. They are so lewd that they end up seducing each other's sons. When these two get together and bring their sons, it's inevitable that something will happen! The four of them take a bath together, show off their naked bodies to their sons, and even have a urination hustle! Of course, the cocks they are after are rock hard! In the end, they have a drunken orgy with facesitting, 69, and swapping until both of them get creampied by their sons!