Just Keep Runnin' is the 2nd release from Agent 51 that got them signed to (Billie Joe Armstrong of Green Day's label) Adeline Records in 2001. It was first released in 2000 on the band's own Suburban Hooligans Records label, then was re-released in 2001 by Adeline Records with additional tracks. This record expanded their punk rock sound to include influences of classic rock and heavy metal. It also greatly expanded the band's secret agent mythos, with the liner notes extensively detailing the comic book-style secret origins of the band and its members. According to the story, the band members were rogue secret agents with psychic, cybernetic and alien-enhanced abilities who were struggling against a secret government organization known as "The Agency." The Agency sought to use satellites to control the minds of Earth's population, and Agent 51's mission was to expose the Agency's secrets to the general public disguised as an ordinary rock band.