K.C. Cooper, a smart and intelligent girl, who is a high school math genius who gets recruited by her parents, Craig and Kira Cooper, after she discovers that they are secretly undercover spies. Her brother, Ernie, tries to help because he feels left out and eventually joins the team. On her first undercover assignment, K.C. must find a teen spy and track down the code for a dangerous virus that could render all mobile devices useless; it';s also the night of her school dance.