Unknown to the eager new interns, the entire agency is fictional and the employees are a cleverly cast mix of talented actors: Devil Wears Prada type Joanna Grade and her three extreme members of staff - Joanna's brash ex-husband and business partner Colby, her walking diary Susan, and opinionated and flamboyant creative force Shussi. The first new interns, Thomas and Aquila are thrilled to learn that Grade PR promotes a new clothing collection designed by rap superstar Lethal Bizzle. Unfortunately, an accident with a steamer and an indecent proposal combine to produce a photoshoot that Thomas and Aquila will never forget. At the end of the episode, the fictional element is revealed to Thomas and Aquila, whose efforts are rewarded by a full month's paid placement, giving them invaluable first-hand experience at a real fashion PR agency.

In this second episode, interns JJ and Zoyia join Grade PR to help market a brand of fake fur discovered by dodgy-dealing Colby. Shussi is in his element arranging for his new boyfriend, Dancing on Ice's Jason Gardiner, to wear the coat to a celebrity event. However, mayhem breaks out when some royal underwear goes missing, leading to an inappropriate eBay sale, and a raging Michaela Strachan intervenes with the fake fur coat plan. Will all the hysteria stop JJ and Zoyia making the event a success?

In this episode, Felicity and Shaz enter Grade PR's mad fashion world. Colby gives hot new designer Tom Codd's sample collection to a mysterious Chinese lady for 'safe keeping'. Meanwhile, broody Joanna is awaiting a different type of 'sample' from Blue's Simon Webbe. Needless to say, the interns are put through their paces as Shaz joins in the fight to retrieve the sample collection from the criminal underworld, while Felicity is left to help Joanna juggle the effects of gravity on her uterus!

In this fourth episode, interns Brave and Danni enter the mad world of Grade PR. It's a big week and everyone in the office is in their element, especially new staff addition Dominic. Keira Knightley has agreed to wear one of Grade's designer's dresses to a premiere, however Dominic has given it to former Big Brother contestant Nikki Grahame. Danni has her own problems when she is forced to deal with an awkward love triangle and a host of other dramas, which sees Grade heading to PR Armageddon.

Junior and Sarah join the crazy world of Grade PR, where the agency is putting on a huge event for cosmetics giant Benefit, and Pussycat Doll Kimberly Wyatt is booked to add some celebrity sparkle. Meanwhile, Joanna and Colby have a very important interview with an adoption agent. However, after a surprise visit from Joanna's secret son and a massive hissy fit from Kimberly Wyatt, it's left to Junior and Sarah to save the day.

It's Grade PR's biggest fashion event to date, but new interns Rachel and Sam discover that the firm has been blacklisted by every modelling agency in the country. Fortunately, Colby has drafted in some beautiful girls to fit the bill. During the catwalk build-up, Sam assists Shussi and the police in an undercover operation, while Rachel plays matchmaker to Susan and a graphic designer. Celebrity guests Gemma Cairney and Calum Best arrive for the show, but with Sinitta's attempt to gatecrash the party and the undercover police waiting to swoop, can the interns hold it together?