Bespin!
There was a fight in there of course between Luke and Darth Vader, and Luke's hand gets chopped off but who gives a shit. He falls down a tube and of course as luck would have it... a one and a billion chance... as they're flying by... they notice him hanging from some scaffolding by his leg.
Not unlike you would be able to see an ant from the thirty-first floor of a building as it wandered across the grass... in a park... 72 blocks away.