Card-game fanatic You Heng wakes up to find that the world's timeline has changed dramatically. It has become a fantasy world dominated by card games, where everyone feels terrible if they go even one day without playing. This world has a card-player career system and power structure that make perfect sense, and everyone awakens a Soul Monster upon reaching a certain age. This determines their future deck as duelists, and the strength of their ace monster has a major impact on their future achievements. For instance, the kid next door, Old Wang's son, awakened Cyber End Dragon, so he'll probably have a rough road ahead. His older sister awakened Thunder Dragon Colossus, and will surely have no trouble inheriting her adoptive father's Thunder-type gym. The haughty class president, who has always treated him poorly, supposedly got El Shaddoll Winda. She looks like a woman you don't want to mess with!
Watching duelists show off their ace monsters, each with their own special abilities, You Heng glances down at his own plain and unremarkable Soul Partner.
"Hello, everyone. I'm You Heng, a duelist who's been practicing for two and a half years. This cutie here is my Soul Partner, Kashtira Fenrir."
"Next, we'll perform a little magic trick for you... It's called 'Banish Your Monster Face-Down!'"
