Just recently the official social media account of Kingdom Hearts III released some links to some videos that could give a quick refresher.
Kingdom Hearts III archive videos
The Twitter account of the game recently tweeted out a link to some of the official archive videos. These can easily give a quick refresher for any fan and anyone who is new to the franchise. Tons of important information are squeezed into these videos just to make everyone understand and remember the grand franchise of Kingdom Hearts.
The game is now available on Japan. It will be released on Jan. 29 in the US. It is now available on Xbox One, and PlayStation 4.