[quote=@Double]
That stray ship had to have come from somewhere, but I can't think of any.... wait, yes I can. Kami's ship. Soneone could have discovered Kami's old ship in Yunzabit Heights, but whether they could just claim it without him knowing is another matter entirely.
[/quote]

That was sort of my idea. A rouge scientist and her then-newborn son being chased around the world and eventually being led to the "end of the Earth". She wouldn't claim the ship but take time to study its structure so that she could replicate it. After she does (by getting materials through largely illegal means), she flies off into space. She is relieved that she isn't being chased around anymore, but has no idea what to do next. The ship then screws up and crashes on a foreign planet (because she didn't have the authority to get better materials for it), and she dies. Her son survives then gets picked up by the orphanage owners.

If you let me in, though, I doubt I'll make this a plot point in the future. The appeal of DBZ to me is weirdos defending the world together, and I intend to play a more supportive role.