My (imaginary) girlfriend and I are driving along a remote country backroad one night in a terrible thunderstorm, when our car breaks down.
There is no cellphone signal, so we run to a nearby farmhouse in the pouring rain to look for help.
The man and woman who live there are extreme sexual sadists who see an opportunity for some real fun.
They take us at gunpoint, force us to strip, bind and gag us, and drag us terrified and struggling down to their very well-equipped and soundproofed basement dungeon.
We are never seen again...