There was a movie that was maybe aired on Disney or ABC family with two kids, a brother and sister, who had some sort of special abilities. I don't recall the abilities all too well but they end up on a farm.
At the end they are trying to get away from some evil guy who is trying to take advantage of their powers.
A spaceship randomly shows up at the end of the movie and they decide to leave earth. They ask a women who they befriend to come along.
She says to them "somebody has to stay to tell the story".
If anybody remembers the name of this movie please let me know.