Twilight Sparkle and her friends have become confused by mysteries happening to them. What is the Keyblade they can wield? What are the Heartless? And more importantly, what is Kingdom Hearts? Their questions will be answered by some protectors of light and a journey they will never forget.

This story takes place after the events of Kingdom Hearts III (at least, how I know how it'll turn out) and before the season three finale, but there are foreshadows in the epilogue and secret chapter that hint to it, so WATCH OUT!