I know this feeling!

It's sad when I have this epic plot planned for them, and they won't budge. They're just like, "That's stupid. There's no way I'm gonna do that." And then they do their own thing. At least someone takes it upon themselves to curb my rampant melodrama, even if they don't actually exist.

It's great that they transformed your plot! That's a good feeling (even if it's a little infuriating).