Serena Santos is on vacation with her best friend, her best friend's boyfriend and her best friend's brother, Peter. Serena is super bored, her best friend has just been fucking her boyfriend the whole time, they haven't gone out at all. All the sex her best friend is having is making her jealous and horny! Peter decides he's going to shower, the thought of that gets Serena even hornier, she starts masturbating behind the shower wall. Peter hears her faint noises of pleasure, Serena asks for help, Peter is worried his Sister might find out and be really pissed but fuck it, he can't pass up fucking a hot half naked chick who's horny and ready to go!