Sometimes you can tell how a story will end. The boy is going to get the girl. The bad guy is going to lose. Grandpa is well loved, but he’s going to die. The Sheriff retires, but no one will leave him alone. Surely we can do better! So here’s the start of a plot, and you have to come with an ending that absolutely no one would have expected.
Plot: Chuck and Suzanne, two Ph.D. astronomers are on vacation in Arizona, doing a lot of desert hiking. Today at dawn they’ve left their Jeep at a trail head near Canyon De Chelly and expect to take a ten mile circle route that should bring them back to where they started. Half-way along the well-marked trail, Chuck twists his ankle.