Ji-young Kang’s grandfather has been giving her persistent lessons on “Trumps” and “Rules” for years. But what Ji-young always shrugged off as card games soon becomes a supernatural reality when she stumbles on a psychic battle between two guys! And out of nowhere, Ji-young intervenes with a power of her own!

Now Ji-young has transferred to a new school...and lo and behold, the two mysterious guys she ran into from before are there! A world of psychic abilities and control for power begin to surround her, and Ji-young must frantically master her own power and recall the lessons of her grandfather if she wants to survive!