Black Kyurem will know the move Freeze Shock, whilst White Kyurem will know the move Ice Burn. Iris replaces Alder as the Unova Region Champion. I dont really recall the differences but I know Black 2 and White 2 were a setting of two years ahead of Black 1 and White 1 and obviously its still set in. Characters from the first game return, such as Cheren, Bianca, and N. The storyline involves a new version of Team Plasma.