Leo is a village boy who dreams of becoming a card master and following in his late father’s footsteps. While taking the card master test after turning fifteen, Leo is offered a selection of cards; however, his goal is not fame! He wishes to give his mother and sister a better life. One of the options is a “Rock Salamander”, the weakest of the weak – known to only have slight defense and no attack power.  Against all advice, Leo still chooses it to be his first card! To his surprise, the weakest of the weak is completely different from what everyone had said. A princess? The Prime Minister’s daughter? Perhaps even a Duke’s daughter? And to top it off, multiple EX monster cards? Just how far can Leo go as he works to grow stronger, one step at a time?