The series features the adventures of Princess Natasha, who assumes the role of a secret agent/exchange student in an Illinois high school to stop her evil uncle Lubek from overthrowing the fictional country Zoravia and its respected monarchy. While living in the United States, Natasha lives with the O'Brien family, which consists of a father, mother, and two boys: the peculiar K.C. and the indifferent high schooler Greg, on whom she has an unrequited crush.
