You run out of gas on the road. You're lost, and have no cell service. You look around, and discover a small farm with a barn. You walk up to it, out of other options. When you knock on the door, however, nobody answers. It is quite late so it's understandable. The barn door is open, and so you decide to take a look inside.

The barn is filled with stalls with a variety of animals in them. There's about ten stalls, one animal for each, except... One stall is empty, and its door is open.