David Agu, a fourteen-year-old boy and the only son in a family of seven, lives a relatively normal school life—until a violent restroom incident changes everything. While hiding from trouble, he overhears two notorious bullies, Thomas and Mark, attacking a classmate, Tayo. Drawn by the irresistible scent of blood, David loses control and discovers shocking changes in himself—scarlet pupils, pale skin, and sharp fangs. His monstrous appearance terrifies the bullies into fleeing, but the transformation fades after he recites the Diamond Sutra, leaving David shaken and confused about what he’s becoming.News of the incident spreads fast, earning him the unwanted nickname “Red Devil” from his excitable best friend, Emeka. That same day, a mysterious note invites David to meet at the school orchard during lunch. Despite trying to avoid Emeka, he ends up involving him as a secret lookout. The sender turns out to be Sandra, the school’s admired beauty and Tayo’s sister, who thanks David with a peck on the cheek.