Once Upon a Time in Wonderland might have been a bust, but that doesn't mean that they can't do another spin-off. What I'm thinking of is that this one should be on the theory of Frozen and Tarzan. In this story, Anna found something else about her parents and wanted to find out about the location and what happened. Elsa asked Kristoff to take care of Anna while going on this journey and when they arrived on a island, they were surrounded by gorillas who bought them to their home where they meet the King of the Jungle, Tarzan.
If to be continued, please share to your friends and I hope that you'll like and approve.