Make a scary movie that slowly turns into a remake of "Doogal"(also called "The magical roundabout")

So there this girl living in a normal scary movie setting, grey and stuff. But then it starts to get colorful as the bad guy comes to town. Plus her friends starts to act weird. Turns out her friends were a talking frog, a talking train, and other beings in disguise. And they must team up to fight the bad guy. In crazy scary, comedy, action story.