A twist of fate landed Sora and Shiro in a bizarre world where everything, even war and politics, is decided by the outcome of games. For a couple of pro-gaming savants like them, it's the ultimate playground. With the fate of mankind's last kingdom on the line, they're ready to wager everything! The rules are stacked against them, the enemy is only too happy to cheat, and there's even magic involved, but one thing's for sure-no one plays a better game than they do.