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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 like non before – 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 about losing the weather machine, and sets up her own mission to get it back.

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 is due for an upgrade, the Coopers reminisce about their great times before they have to delete her memories and return her to the Organization.

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 KC 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.

K.C. struggles to decide if she should continue as a full time spy or live a normal life at college.