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, and balancing everyday family life while on undercover missions, near and far, to save the world.
Ernie hosts a group of young international agents while K.C. is away on a mission.
The team strategizes on ways to find Bernice.
K.C. is tired of being just friends with Darien.
When Judy freezes and starts saying that her memory is almost full, Craig realizes that it's time for her to return to the Organization to upload her experiences.
K.C. realizes she misses Darien and goes to tell him, but he reveals he has a new girlfriend. K.C. lies and says she has a boyfriend and the two agree to go on a double date.
K.C. decides to save Ernie since it was her fault the barbecue failed. They learn the Bishops have planted listening devices and someone called the "The Mask" wants the weapons sold.
K.C. recruits her family to help Brett escape The Other Side; the Coopers find themselves fighting enemy agents and the Organization.
Ernie and Marisa team up to help K.C. stop Brady and The Alternate from launching The Storm Maker.
Byron waits for K.C. to respond and she says she's not K.C.. but her cousin, Cassandra. Byron suggests they all go to dinner, so K.C. breaks Bernice out of jail to play her cousin.
K.C. struggles to decide if she should continue as a full time spy or live a normal life at college.
K.C. sets a trap to reveal Brady's secret identity.
K.C. and Marisa take Amy on a trip to New York so she won't be at home to witness her "parents" being arrested by The Organization.
K.C. and Ernie go undercover with a planet-loving group called the Volunteens, while Craig is getting in shape for his new assignment to protect an ambassador.
K.C. struggles to make amends with Marisa after their fight, while Marisa wants a recommendation for The Organization from K.C.
When K.C. tells her family and The Organization that Brady is an enemy spy with The Alternate, the Coopers secretly work with Marisa to set a new plan in motion to catch him.
In this one-hour special, K.C. and her family of spies, along with her BFF Marisa, are on the run from archenemy Zane in Rio de Janeiro when they must take on another spy – the fierce and slightly bizarre enemy agent Sheena.
Ernie and Judy travel to New York during the Central Park Spooktacular to catch an evil wolf serum; K.C. and Marisa throw a party back home.
The Cooper family tries to take a much-needed vacation from spying, but their plans are interrupted when a wealthy socialite vanishes from their resort and K.C. is determined to find out what happened.
In this one-hour special, K.C. and her family of spies, along with her BFF Marisa, are on the run from archenemy Zane in Rio de Janeiro when they must take on another spy – the fierce and slightly bizarre enemy agent Sheena.
The Coopers go undercover in a biker club to find Richard, the head of The Other Side. Meanwhile, everyone thinks K.C. is losing it when she claims she saw her evil cousin Abby, the enemy agent she eliminated.
The Coopers track down agents who are distributing weapons to enemy agencies, only to discover they are parents of K.C.'s classmate Amy.
K.C. and Ernie must figure out how to put their rivalry aside so they can escape a bank vault that they're trapped inside.
The K.C. doppelgänger gains access to The Organization, now Kira and Craig must race against the clock to save their daughter and the agency.
K.C. and her family find themselves in an epic spy showdown vs. The Other Side when her evil aunt Erica and her family return.
The Coopers prepare for Poppa Earl to visit with his new fiancé, Betty. He surprises everyone with how happy he is, but K.C. recognizes Betty from an unsolved case from 1977.