Under the Stars (джен)

A space battle goes wrong, Luke and Vader end up shooting each other down and crash land on an uninhabited planet. Vader reaches the crash site of the rebel snub before his adversary has regained consciousness. With Imperial search crews slowed down, Vader decides to interrogate the rebel pilot and then dispose of him. That is, until he realizes who exactly is in his hands.
Or
Luke and Vader have an (involuntary) father/son camping trip, well sort of.