As the foursome watches the eerie nocturnal spectacle of The Lights, a local natural phenomenon, someone is watching them.

Who doesn't love the single life? Being able to hook up with whomever you please and making no apologies for it. And if you're looking to celebrate the joys of being "unattached", there's no better series than Foursome! You know the formula, right? Two guys, two girls, and a sprawling mansion "slumber party".