An animated movie based on a book and breaks the forth wall. Check
A charming Cat an Adaptation of fairy tales. Check
Adult Humor in a Child's movie and an attempt to break tropes. Check
This film was charming, 90 minutes and all kinds of enjoyable. The voice cast was great. Haven't double checked them yet but pretty sure the villain is Sirius Black/ Shame Wizard (If you Know you Know!).
It's about a Cat, Rats, and an Amateur Pied Piper scamming villages till they get to a large town with more than they bargain for. Love, mystery, and Rat Kings oh my!