Hey there
Could you explain the problem with more details?
So far all the other players have been able to complete all the stories, including Luke's without any problems.
Perhaps you have encountered some previously unknown problem or bug... but I would need more details about exactly what is preventing you from progressing through the story.
OR are you commenting that you can't progress because the character blocks you? In that case it's a matter of choices made.
You can take a look at the walkthrough on the game's Twitter profile if you have any doubts