K.C. Cooper, a high school math whiz and martial arts expert, learns her parents are spies when they recruit her to join them in the secret government agency. The newly appointed teen spy takes on her first undercover assignment, which coincides with her school dance. The mission: apprehend an enemy teen spy and recover the code for a virus designed to render every mobile device useless.
K.C. tries to convince her parents that her brother, Ernie, who is a genius with computers but pretty clumsy at everything else, is ready to become a spy. However, Craig and Kira have a different plan and introduce them to their new little sister, Judy - a sophisticated humanoid robot disguised as a precocious 10-year-old.
K.C. reluctantly agrees to try out for cheerleading with Marisa so they can spend more time together. Meanwhile, Craig tries to bond with Ernie over sports, but quickly learns his son's gaming skills are better online than on the field.
K.C. and Ernie team up with their retired-spy grandparents – Grandma and Pops – to rescue Craig and Kira from a dangerous mission.
Marisa has been named a finalist in a photo contest and her winning photo could be in magazines and billboards everywhere, the only problem is her entry photo is of K.C.
When K.C. loses her confidence after making a big mistake on a mission, Marisa goes on her own mission to get her bestie back on her game.
The Coopers are assigned to protect Prince Promomomo and must hide the teenage leader in their home for a few days. But when K.C. and the Prince become smitten with each other, Craig quickly puts his spy duties aside to remind the Prince that as K.C.'s father, he is the king.
When Agent Beverly from The Organization hassles K.C. for her last mission report, the same classified information that Marisa has inadvertently used as her class paper, the best friends must race against the clock to get the assignment back.
When K.C.'s somewhat awkward brother Ernie brings home his new girlfriend Jolie, a smart and super gorgeous exchange student, K.C. is convinced she is really a spy.
When The Organization assigns Junior Spy of the Year, Brett Willis, to go undercover as K.C.'s boyfriend for a mission, K.C. winds up having real feelings for him. Meanwhile, Craig and Kira receive alarming news that their old arch rival Zane is back and determined to destroy them.
Zane has captured K.C., but her family has no idea because the evil agent has created a K.C. look alike to take her place and defeat the Cooper family.
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.
When K.C. decides to take a must needed vacation during a stakeout to catch a notorious robber, Ernie finally gets a chance to "bake the biscuits" and prove to his dad and K.C., that he is more than just the computer guy.
When Mrs. Goldfeder's house is robbed, K.C. recruits her dad to organize and lead a neighborhood watch group, much to his chagrin. Meanwhile, Judy enlists Pentatonix to help her deliver a special message to Petey.
K.C. goes undercover as a college student at The University of Maryland to befriend and protect the President of The Organization's daughter, Eliza. Meanwhile, Judy tries to talk Ernie into letting her join his Adventure Scout troupe.
When K.C. and her mom go undercover in a correctional facility, they have to face off against each other to protect K.C.’s cover as a tough criminal and Kira’s disguise as a correctional officer.
K.C. goes even deeper undercover into The Other Side’s training ground and is close to getting the intel she needs, when she discovers Brett is her new training officer.
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.
Kira tells K.C. that the mother-daughter Cotillion Ball is an undercover mission so that she'll participate; K.C. asks Marisa for help.
To rescue an agent's son at an all-boys cadet academy, K.C. goes undercover as a male cadet with Ernie.
K.C. Cooper enlists the help of former spy and computer engineering expert Simone Deveraux when her family's sophisticated robot, Judy, runs away and is captured by enemy agents.
When it's discovered The Other Side has Judy, K.C. and a special guest travel to Alaska to save her! Can they save her? Or has The Other Side already made use of her...?
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.
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 Organization arrests Kira as an enemy; defender Maggie Summers helps K.C. prove that her mom was framed.
K.C. plans to give her dad the most perfect christmas gift of all, a surprise visit from his dad. When he arrives, she’s the one who ends up surprised. It turns out that Craig and Poppa Earl not only don’t get along very well, he also has no idea that they are all spies.
Brett's assignment is to eliminate K.C. but he can't bring himself to follow through; K.C. decides to protect him from The Other Side.
K.C. recruits her family to help Brett escape The Other Side; the Coopers find themselves fighting enemy agents and the Organization.
K.C. is finally coming to terms with no longer being a spy, but when a feared criminal escapes, the Coopers are given a chance to rejoin The Organization.
When a college student shows up claiming to be a relative, Kira is forced to tell a family secret she's been holding for years. Meanwhile, Marisa and Ernie give K.C. tips on how to handle her first date with Darrien.
When Kira forbids K.C. from spending time with her newfound cousin Abby, the teenage spy finds a way around her mom's orders.
Kira reluctantly agrees to help K.C. reunite Abby with her mother Erica, who has been hiding from The Other Side and The Organization for several years.
When Darien is mysteriously injured in an accident, K.C. tries to figure out who is behind it. Meanwhile, Craig becomes head of security for a vice-presidential candidate.
When K.C. learns Erica and Abby are working with the head of The Other Side to carry out an evil mission at the Presidential election party, the Coopers must act fast to stop the enemy agents.
Ernie tries to impress The Organization with his science skills and develops a truth serum. Things get out of hand when K.C. accidentally drinks it and has to complete an interview to help Marisa get a job.
To boost Ernie's self-confidence, K.C. and Craig tell him that he's in charge of their next mission, but secretly K.C. is really running point.
When K.C. goes undercover in a retirement home as wise-cracking senior citizen Bernie, her disguise unexpectedly wins the affection of feisty senior, Irma.
When Craig and Kira discover they were never legally wed, K.C. decides to throw them a do-over wedding.
When K.C. has to find an undercover spy to pass a test for a promotion at The Organization, everyone at the Cooper's neighborhood potluck becomes a suspect. Meanwhile, Petey is on his own mission to try and scare Judy.
When K.C. has to capture wanted computer hacker Noah Stone, she finds herself in competition with teen bounty hunter Pinky Carter, who is also determined to take the hacker into custody.
When K.C. has to catch a ring of criminals smuggling fireworks, she reluctantly has to take on a new partner, canine spy Dexter.
In this one-hour special, K.C. and her family of spies assume a myriad of disguises to catch an art thief, including going undercover as performers in a traveling circus.
Grandma Gayle takes K.C. and Ernie back to the 70s to relive how Cleo Brown became the first Black female spy for The Organization.
Kira's big moment at the Spy of the Year Awards is interrupted when the son of Tony "The Big Toe" Tolentino crashes the secret ceremony to avenge his father.
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. is given a mission by the Volunteens organization that pits her against Craig and his assignment to protect the ambassador.
When K.C. goes into a virtual reality game to rescue Ernie, it becomes the craziest Halloween ever for the teen spies as they try to tackle the alternate universe and enemy agents Darci and Damon, the masterminds behind the evil game.
When Scholastic Achievement Quarterly tries to interview K.C. for being the smartest student in her school, she disguises herself as her mom so she can be featured and hide her identity as a spy.
When K.C.'s latest mission is compromised, she is tasked to find the mole in The Organization.
As the Cooper family decorates the house for the holidays, K.C. begins to reflect on the many disguises and missions she has taken on as a spy in hopes she can get over her holiday blues and recapture the spirit of the season.
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.
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.
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.
K.C., Ernie, and Marisa are on the run from Zane and eccentric enemy agent Sheena in the heart of the Brazilian jungle.
When Zane sabotages the Coopers' plane ride, it is up to K.C. to save herself and her family.
K.C. is surprised by the results of her SAT score and believes someone tampered with her test. Meanwhile, Marisa expresses interest in becoming a spy.
K.C. struggles to make amends with Marisa after their fight, while Marisa wants a recommendation for The Organization from K.C.
Unbeknownst to K.C., Marisa is leaking classified information including her latest undercover assignment as a construction worker. Meanwhile, Judy's disagreement with Diane over the tooth fairy jeopardizes the sophisticated robot's disguise as an everyday 10-year-old.
K.C. is tasked with tracking down a dangerous weather-controlling device on the same night as her homecoming dance.
K.C. lies to The Organization about losing the weather machine and is sent on a new mission with Craig to recover the machines power source.
K.C. sets a trap to reveal Brady's secret identity.
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.
Ernie and Marisa team up to help K.C. stop Brady and The Alternate from launching The Storm Maker.
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.
Ernie hosts a group of young international agents while K.C. is away on a mission.
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.
K.C. is tired of being just friends with Darien.
K.C. is assigned to protect a foreign diplomat at a university ceremony and must go undercover by joining the school's drumline to secure a key position next to the diplomat.
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.
The team strategizes on ways to find Bernice.
The Coopers track down agents who are distributing weapons to enemy agencies, only to discover they are parents of K.C.'s classmate Amy.
As K.C. continues to get closer with Amy, she plants bugs in the Bishops' house to get information on the weapon-distribution list.
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. 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. struggles to decide if she should continue as a full time spy or live a normal life at college.
