Cinderella and the Secret Prince

Cinderella and the Secret Prince, also known as Cinderella 3D, is a 2018 American animated fantasy adventure film directed by Lynne Southerland from a screenplay by Francis Glebas, Alice Blehart, Stephanie Bursill and Russell Fung, based on the Brothers Grimm version of the fairytale "Cinderella". Internationally, it grossed $12,143,896 against a budget of $20,000,000.

Premise
During the Royal Ball, Cinderella meets the prince in hopes of marrying him. However, he turns out to be incredibly rude and mean-spirited. She and her three mice friends then discover that the real prince has in fact been turned into a mouse by an evil witch and replaced by a fraud; now she and her mice have to rescue him and turn him back into a human before it's too late.