The life of Sam Pinkett, a council employee, goes from bad to worse when, after witnessing a car accident, he answers a mobile phone found at the site.
Sam and Phil are sent in Nick Stevens' place to negotiate with Mr Lau, the kidnapper of his wife, Scarlett.
Sam and Lau agree to exchange their hostages, but Phil gets in the way. They manage to escape and take Scarlett back to her husband.
To get Scarlett and the police off their back, Sam and Phil must find a music box which was sold to a mysterious Russian exile.
After taking care of the wounded Marat, Sam and Phil agree to meet with the MI5 to hand them over Marat.
Chased by the MI5, Sam and Phil must warn Lizzie of the true nature of Reid's development plans.
Phil and Sam are presumed dead, killed by a car bomb, but are on a witness protection scheme in Texas, working under assumed names. Unlike Phil, who loves it, Sam is homesick and wants to find out who tried to kill them. Learning that his mother is ill Phil agrees they should return and are introduced to sinister Carlos Espinosa, who gives them new identities. They leave work one step ahead of Marat's vengeful brother Yuri, who is out to get them but they are arrested at the airport.
Arrested at the airport the pair discover that Espinosa has used them as drug mules and they are sent to a penitentiary where Sam attracts the attention of a tough inmate. Agent Miller agrees to release them if they testify against Espinosa but the drug lord sends his lawyer to tell the boys that they are doomed unless they help find the whereabouts of money stolen from Espinosa by serial killer and white supremacist Nathan Cross. Having obtained the evidence from Cross, who is killed in a prison riot, the pair are rescued , they assume by Espinosa,but the rescuers ...
Adopting new identities yet again, Sam and Phil must fake their way through building a bomb.
The lads hi-jack a plane, parachuting out over Kent and hitch-hiking to Bracknell where they make contact with MI5 boss Cox, giving her the chemical weapon. Khalil follows them in a stolen boat but is arrested whilst Sam is confronted by Dimitri, who admits that he planted the car bomb in revenge for Marat's death but he is shot by the police. Phil is tracked down by Esposito's lawyer and gives him the glass eye but Esposito is later arrested by agent Miller and Phil, reunited with his mother, proposes that the reward money goes to his Texan girlfriend Rosa. Sam is ...