Van Helsing's mysterious new invention transforms Drac and his pals into humans, and Johnny into a monster. With their new mismatched bodies, Drac and the pack must find a way to switch themselves back before their transformations become permanent.
This movie is pretty much exactly what you would expect. Continuation of a decent kids/family friendly franchise. It's simple, short, has good characters that you are familiar with and comes together in a cute way. Outside of that - you will most likely forget watching it 5 minutes after its done.
I would recommend families checking this out. It came out on Amazon Prime instead of theaters so it doesn't cost anything. It's short enough to not be considered a waste of time.