Twin sisters Sterling and Blair balance teen life at an elite Southern high school with an unlikely new career as butt-kicking bounty hunters.

K.C. Cooper, a high school math whiz and karate black-belt, learns that her parents are spies when they recruit her to join them in the secret government agency, The Organization. While she now has the latest spy gadgets at her disposal, K.C. has a lot to learn about being a spy, including keeping her new gig a secret from her best friend Marisa. Together, K.C. and her parents, Craig and Kira, and her younger siblings, Ernie and Judy (a humanoid robot), try to balance everyday family life while on undercover missions, near and far, to save the world.

When a tribe of cavewomen imparts cruel justice on one of their own their fate takes a turn for the worst. After discovering and falling in love with the corpse sacrificed by the girl-gang, a lone wandering giant of pre-historic mythos is inspired to homicide. Consequently the cavewomen are menaced by the heartbroken and bloodthirsty cave-brute with a grudge, and the prophetess among them is ignored when she predicts the tragic outcome.