"Successful movies and game franchises get sequels and prequels. Kingdom Hearts Birth By Sleep is the franchise's PSP debut and the prequel. There are Keyblade masters before Sora, the heroes who has took up the challenges to seal the darkness and this is their adventure.When one of the most prominent Keyblade Masters, Zeanort disappeared with his only disciple, the world knew that a big disaster is coming. To prevent darkness from taking over their world and to find the secret behind the master's disappearance, three novices set off on a journey across the Disney Worlds."
