A friend of yours named Colt vanishes after completing a collection of old cards that represent monsters and are used to play a popular card game. You must find a way to collect a set of these cards to save her. Players have 3 monster cards in play which have different HP, traits, and skill cards associated with them. Each turn you draw 5 skill cards from your deck and can discard any of them to make "guts" in order to use skill cards. Knock out enemy monsters or make their deck run out to win!