Appearances can be deceiving...
Suburban couple John and Jane Smith live a relatively boring life to the outside world, but secretly each is hiding from the other the fact that they are highly paid, incredibly efficient assassins, working for rival organizations. When they discover that they've been lying to each other, it becomes all out war and the revelation will put their marriage to the ultimate test.
Two lonely strangers land a job working for a mysterious spy agency that offers them a glorious life of espionage, wealth, world travels and a dream brownstone in Manhattan. The catch: new identities in an arranged marriage as Mr. & Mrs. John and Jane Smith. Now hitched, John and Jane navigate a high risk mission every week while also facing a new relationship milestone. Their complex cover story becomes even more complicated when they catch real feelings for each other. What’s riskier, espionage or marriage?
A spy known only as Mr. Smith (Scott Bakula) works for a private security organization known as "The Factory". Using covert operatives and the latest technology they gather information on technology, science, and economics in an effort to protect corporate America from espionage. They are also hired out as private security or to help with covert operations like the recovery of stolen Stinger missiles. In the pilot, a rival named Mrs. Smith (Maria Bello) becomes entangled on a case with Mr. Smith. After losing her job when her mission fails, The Factory hires her and assigns them to work together. Though they often bicker, and know nothing about each other's personal lives, including real names, they make a good team.