Improve a .PPT Pitch Deckand Convert into an Exciting and Dynamic Video

I am enrolled in a class where I designed a pitch deck for a business concept and I would like to improve the visual appeal of the powerpoint and then convert it to some sort of video that tells the story. The pitch deck is 12-13 slides and I am hoping to end up with a better looking deck that has an animated type video that tells the story. This could be done in something as simple as Prezi or PowToons, but I would like it to be unique. Doesn't need voice-over... music background is fine. Whatever format it is built in, I would like to be able to edit in case I need to revisit it after submission (e.g. Prezi or something with an intuitive user interface to make changes to the images and animation). I have built and can add to the content, I just need design help.