Metro City’s very own superhero Captain Amazing is getting too old for his job, so he’s going to need some backup. Sidekicks is the journey of some die-hard hero wannabes who wish to join the captain for one very simple reason: They are his pets, and he hasn’t been paying them any attention lately.
Fourteen-year-old Zach Harriman lives in New York City with his mother and father. He has been living the life of a typical teen until his father is killed under mysterious circumstances. In Mike Lupica's book Hero, Zach decides that following the devastating loss of his father, he wants to get to the bottom of the story. He knows that his father was powerful and had the ear of the President of the United States. He knows that his father was very skilled in his job of "getting things done." Zach suspects that his father's death was no accident but a premeditated murder by an organization known as the "bads."
Zach's mother decides to throw herself into the presidential campaign for the candidate that Zach's father supported. Though Zach supports his mother's political efforts, he decides to turn his energies towards the investigation of his father's death. He starts asking questions. He also begins to notice that he is being followed. While walking though Central Park he is approached by a mysterious stranger who has information for him. When Zach tells his beloved Uncle John about this man, he warns him to stay away from the stranger. Who should Zach believe?