Stepsisters Lola and Nikki are beautiful and vivacious, but they just don't like one part of their bodies: their small tits. Determined to change their luck, they buy a mysterious cologne that is supposed to make their boobs bigger. They put a little on their chest without any effect. They put on more, but still, nothing happens. Finally, while they are arguing, they spill all the cologne. Bummed and convinced that they have been scammed, the poor girls give up their dream of having huge tits. Meanwhile, their stepbrother Jimmy, who was playing video games in the living room, catches the magical scent of the cologne, so he goes to his stepsisters' room to see what's going on. As he barges in and smells the strange perfume, his cock becomes enormous! As soon as Lola and Nikki realize that the cologne (kinda) worked, they go crazy on their stepbro's dick. Eager to mitigate the effect, the girls put their kinky mouths and juicy cunts to Jimmy's service. Maybe, if the boy cums all over his stepsisters' tits, the effect might still work!