Gehenna is the prodigy of Mist Academy, the academy full of gifted assassins who protect the whole of Regions. Her team, team Raven, is tasked with the most difficult missions and as they work their way up the ladder they begin to learn more of the secrets of the Regions. Gehenna has come a long way from being another criminal by association in the Isolation Region, it took a lot of adjusting when coming to Mist Academy. But after three years and the help from her teammates, Amon and Marley, she is the most respected by other assassins and even the elders who run Mist Academy. Though, in the back of Gehenna's mind there is doubt in the system of Mist Academy, doubt in the words of the elders. After coming across the man who is thought to be the leader of the terrorist group of the Regions Gehenna learns more about her role in Mist Academy. She begins to question the people she once trusted. Who is a friend and who is a foe? Who really has Gehenna's heart? Is the morally grey villain the answer to all her questions, is the man who brought her to Mist Academy and became her first love her only ally, is the intelligent and goofy boy she considers her friend really on her side?