Callista Zinnia Gozon is a girl with an extremely unique life. She has many names and personalities because she is a young spy. She studies at Ciphercrest Academy, the top university in the hidden world of spies. Her mission is to gather information as a normal student in the ordinary world. After a year, every student is given new missions, and Callista's mission is to gather information, with the help of the top student of the academy, Lucas Arciel Alvarez, her rival. Lucas actually did nothing to her; it's just that Callista hated him for being the best. She hates him because he's the reason she never became first at everything. But as they do the mission together, Callista will soon realize that Lucas isn't really a bad person. Throughout the story, Callista will realize that everyone has their own strengths and weaknesses, which will help her become a better person.