ATOM chronicles adventures of five teenagers, set in fictional Landmark City.

A.T.O.M. (Alpha Teens on Machines) chronicles the adventures of five teenagers, set in the fictional Landmark City. The Alpha Teens, which consist of Axel Manning (the main character), Catalina Leone, Crey Kingston, Zack Hawkes, and Ollie Sharker, test prototype vehicles and weapons for Lee Industries, and use these prototypes to combat criminals, particularly the sadistic Alexander Paine.