Viper is an action-adventure TV series about a special task force set up by the federal government to fight crime in the fictional city of Metro City, California that is perpetually under siege from one crime wave after another. The weapon used by this task force is an assault vehicle that masquerades as a Dodge Viper RT/10 roadster and coupe. The series takes place in "the near future". The primary brand of vehicles driven in the show were Chrysler or subsidiary companies. The Viper Defender "star car" was designed by Chrysler Corporation engineers. The exterior design of the car was produced by Chrysler stylist Steve Ferrerio.

Thanks to his police officer father's efforts, Shawn Spencer spent his childhood developing a keen eye for detail (and a lasting dislike of his dad). Years later, Shawn's frequent tips to the police lead to him being falsely accused of a crime he solved. Now, Shawn has no choice but to use his abilities to perpetuate his cover story: psychic crime-solving powers, all the while dragging his best friend, his dad, and the police along for the ride.