Samantha comes home from her bartending shift and - oh, my god - are her eyes playing tricks on her? Not like she had been drinking?
No, it's real. It's Kayne Waterhouse, her fiancé. He's in her bed. On top of ... on top of ... Gina, Samantha's own sister. And not only is Kayne doing Gina, he has also knocked her up and now they are getting married.
"So, Samantha," Gina says, "I want you to be my Bridesmaid."
Are these guys for real?