King Mickey and Yen Sid prepare for an impending threat by putting Sora and Riku through the Mark of Mastery exam. Sora and Riku are sent into the Sleeping Worlds, where they will face enemies and allies that have never been seen before. If they can successfully complete the task they are given, they will be deemed true Keyblade Masters.

King Mickey and Yen Sid prepare for an impending threat by putting Sora and Riku through the Mark of Mastery exam. Sora and Riku are sent into the Sleeping Worlds, where they will face enemies and allies that have never been seen before. If they can successfully complete the task they are given, they will be deemed true Keyblade Masters.