Testing the Limits (1998)

Mike and Toni, a couple who is about to marry, decide, in view of their strained relations in recent years, to go on a romantic trip to the mountains. Unfortunately, their car breaks down on the road and they have to stop for the night in a small hut nearby. Soon, however, the owners, Jen, photographer, and Kristin, a photo model, return. Hearing their story, they invite them to spend the weekend together.