On his first day at school, Ken is challenged to a battle by Hosuke Dekai, a top Legendz player. Armed with his gigantic troll, Hosuke can't wait to teach Ken a lesson in humility, but even more- he wants to win the school's Legendz tournament, and the prized Golden Soul Figure, by any means necassary!
Ken's classmates Ririko and Hideaki are kidnapped by students of a rival school as bargaining chips for the coveted Golden Soul Figure, and it's up to Ken and the top LegendZ players at Ryudo to save them! Trapped on the top floor of Kokuryu Elementary, the hostages can only pray that their friends have the power to fight their way up- past hordes of Blackhounds and other nasty surprises- and liberate them!
Ken and his rival Kaoruko recover the mysterious crystal that will prove her scientist father isn't a crackpot. But Leo, the ringmaster of the Legendz Carnival has other ideas and will do anything to get his hands on it. Their explosive duel finally releases the true power of the Golden Soul Figure, but will it be enough to stop the forces of Darkness that are closing in on Ken and his friends?!
Ken, Kaoruko and Leo set off to South America to rescue Leo's sister and Ken's friend Ririko from forces of darkness known as Necrom. Their quest takes them deep inside Necrom Palace, a place crawling with dark Legendz of enermous power. There, Ken and his friends will face the greatest test of their abilities in the battle to stop the resurrection of Jabberwock, the lord of Necrom!