Ruby Rose has wanted to be a Hunting Duelist all her life, to train her aura to manifest the monsters in her deck to fight the Grimm. So when she gets an invitation to join her sister at Beacon Duel Academy, she jumps at the chance. But old powers are stirring, and ancient summoning methods not seen in eons are about to clash, with the fate of Remnant in the balance.
RWBY had failed, Salem has had her way, and due to the brother's verdict, Remnant is now doomed to an inevitable vanquishing. But after they closed their eyes and opened them once again, team RWBY finds themselves in a new world, one where they now aim to live peacefully in and protect it, from anyone who dares threaten it, through the power of... a card game called Duel Monsters?