Betrayed and murdered in her past life, Riley is reborn to the exact moment of her academy's familiar selection. Victoria, her hypocritical rival who was also reborn, instantly steals Riley's F-tier Brown Bear—the key to surviving the impending Ice Apocalypse—and dumps the seemingly useless SSS-tier White Fox on Riley. But Victoria is unaware of two fatal secrets: the Bear remembers the past and is secretly working as Riley's double agent, and the White Fox, once bound by a Blood Pact, is an apocalyptic powerhouse!