I am looking for a fic where Charlie left LA. It's long and I remember nobody knew where he went. Charlie had no specific plans just packed a bag and started walking(?)/bus/hitchhiking... He helps out at an accident and his stuff gets stolen. The reason why he leave might be because he and Don have argued + some other problems. I believe it might gave been gen.

I would also appreciate any fics where Charlie leave or his relationship with the others aren't completely smooth. Preferably Don, then Alan or Amita, or any of the others.