The Fonejacker is a proficient prank caller who calls unsuspecting members of the public pretending to be various characters. Each character has on-screen animations, consisting of pictures of people with their mouths moving, in a crude unrealistic way. Others sections of the show are accompanied by undercover filming in which the Fonejacker in person is in a street calling a company for farce, standing nearby to gauge the reactions.

The Fonejacker is a proficient prank caller who calls unsuspecting members of the public pretending to be various characters. Each character has on-screen animations, consisting of pictures of people with their mouths moving, in a crude unrealistic way. Others sections of the show are accompanied by undercover filming in which the Fonejacker in person is in a street calling a company for farce, standing nearby to gauge the reactions.

The king of prank calling is back with yet more annoying characters to terrorise the British public. In this episode we have a sketch with Mr. Broadbandings, he calls a woman about upgrading her mobile phone contract which is overly-priced. While new character Criminal Dave calling a locksmith asking about unlocking a safe whilst robbing a bank. The usual characters also spring up including George Agdgdgwngo who calls a man after discovering a pigeon in his bank account.

The fonejacker unleashes more prank calls on unsuspecting members of the public. This episode features sketches with Terry Tibbs calling a man about buying a Rolls Royce and offering a much higher price as most export scammers do. Also new character Bijan who calls a paparazzi service whilst chasing David Beckham offering pictures and videos of him. Other regular characters featured include George Agdgdgwngo, Mike & The Mouse.

Prank calling taken to the next level, in this episode the Fonejacker gets some fresh new victims. The stand out sketches from this episode feature Mr. Doovde who calls a shop asking if they sell the Puss 3 (Playstation 3). Criminal Dave calling for a minicab to pick him up at a bank, whilst an alarm bell is ringing and new character Vishka Vishkovsky calls a circus agency about his dancing bear act. The usual regular characters are also back featuring, George Agdgdgwngo, Mr. Broadbandings & Mike.

The prankster is back in this the final episode of series one. The sketches featured include the regular star characters George Agdgdgwngo who is calling from British Gas to tell the victim that he has been overcharged by 36,000,000 Ugandan Dollars which works out to be about £6. The Mouse calls a cheese shop to get the victim to read out the different types of cheese, the mouse gets very excited. New characters include a hospitalised man on a breathing machine calling a company for life insurance . Other regular characters include Mr. Doovde, Mike & Detective Horace Von Khute.

Kayvan Novak returns as the fonejacker, bringing back old favourites like Terry Tibbs and Mr Doovde alongside new characters like Barry Childs the prison guard and Dufrais Constantinople, a man obsessed with home security.

More prank calls featuring Dufrais Constantinople worrying about investigations, Rodriguez the Cuban louse looking to take his kids to school and the return of Brian Bedonde, Mr Broadbandings and Mendoza the Russian.

One-off appearances from Dan the soldier (trying to send flowers home to his girlfriend while under fire) and Jimmy Jon (a bisexual who tries to seduce the man he wants to buy a bed from) and apperances from Steve the convict, Mr Broadbandings selling dating services and Charlie Wong trying to print counterfeit t-shirts.

The fonejacker poses as an Iraqi soldier trying to join the British army, a posh gentleman who attempts to have a car scrapped as revenge on the man who is sleeping with his wife plus appearances from Terry Tibbs, Janec the Pole, Charlie Wong trying to have counterfeit Elvis watches made and George Agdgdgwngo up to his old fraudulent tricks.

More hilarity as Steve the convict attempts to become a chef, Terry Tibbs buys some fireworks, Donald Donaldson talks dirty to an estate agent, Mendoza looks for a drummer to keep the rhythm at one of his "sexy parties", Mr Doodve sings to a record shop and Janec the Pole looks for a job as a builder.

The season finale finds the fonejacker in fine form. Mr Doovde is followed by Janec calling a modelling agency, Dufrais complaining about weather forecasts, Terry Tibbs attempting to buy more than he bargained for, Donald talking about frisking to a bouncer and a one-off appearance from a fat gerbil looking to lose a few pounds.