Ivette is an apprentice of a Red---elite magic users sent from Hell to teach the first generation of children on how to responsibly wield demonic power. Reds sign a contract with the devil to be sent to the mortal world, so they can see their families in exchange of teaching kids the ways of the devil. Once Ivette's successor's contract expires, she will be the new human Red to continue the legacy. On Tuesday, the day of her exam to be a Red, she steals the only connection that Reds have to connect with the higher-ups and uses it to kill her Red. Now the Reds are trying to hunt the killer down, by sending a powerful demon to put the entire school on lockdown. Ivette refuses to give in, but will she have no choice but to?