The story starts with James, an eleven-year-old student in a science class. He is expelled from his school for violence against other students and his teacher.
James later finds out that his mom has died. He is sent to a children's home , and later sent to a secret organization known as CHERUB. James goes through rigorous training and meets new allies.
James is sent on his first mission to investigate a case on a suspicious group of people who are running a terrorist organization to plan an anthrax attack on a group of executives and politician. He is forced to live in a hut and find out as much information by living with his enemies.
CHERUB: The Recruit
James meets a girl who he falls in love with and makes friends with the brothers of the case subjects. CHERUB later discover James had "caught" the disease, and is sent to the hospital.
In the end, the doctors find out that James had never caught the disease, even though he was exposed to it. He returns to CHERUB and is awarded. He is content with his new life at CHERUB, with his sister and his new best friends.