K.C. Cooper, a senior school mathematics whiz and karate black-belt, finds that her parents really are spies when they sponsor her to combine them from the secret government service, the corporation. While she has the latest spy gadgets in her own disposal, K.C. has a lot to learn about being a spy, including keeping her new gig a secret from her very best friend Marisa. Together, K.C. and her parents, Craig and Kira, and her younger sisters, Ernie and Judy (a humanoid robot), make an effort to balance regular living life while on undercover missions, far and near, to conserve the globe.