Sometimes, A Trailer is All You Need

I just watched a preview for Miracles from Heaven.  I feel like I just watched the whole movie.  It looks like a straight forward movie with no surprises.  If there were any, they would not have shown them in the preview.  What is the point of this kind of movie.  I can guess the girls will get healed and they will claim that it was from God and then there will be people that doubt what they say.  Then, a group of the faithful will surround them and say they believe and the movie will end.  I'm surprised that Hallmark just didn't release this on their network.  I think the studio is going for the religious money grab.