FLACK centres on an American PR executive living in London, who must figure out how to make the best of bad situations and somehow manage to get out unscathed.
Robyn (Anna Paquin), is a hugely capable American PR executive working in London who specialises in clearing up the monumental messes caused by her hapless and selfish clients. Although utterly in command of her job, her personal life is spinning out of control.
During the course of her work, Robyn is required to do some highly questionable things, but she's never less than compelling. She is an instantly identifiable, complex human being: fully rounded, flawed, and fascinating.
Robyn thrives in the work environment. There she enjoys close relationships with her office "family": her tyrannical, yet impressive boss Caroline (Sophie Okonedo), her tirelessly hedonistic yet brilliant colleague, Eve (Lydia Wilson), and her endlessly willing intern, Melody (Rebecca Benson). If there is media fire that needs putting out, who you gonna call? Robyn.
She is also dealing with a very tangled private life. Despite the fact that she occasionally slips and sleeps with her clients, she is devoted to her loving boyfriend, a nurse called Sam (Arinze Kene). He is very keen that they take their relationship to the next level and try for a baby.
At the same time, Robyn is coping with her own grief. Her mother committed suicide by jumping off Brooklyn Bridge a year ago, and Robyn and her younger sister Ruth (Geneveive Angleson) are still trying to process it. As the series progresses, Robyn also tries to help Ruth's hopeless husband Mark (Rufus Jones) out of a fix.
In addition, Robyn tries to kick her myriad of addictions. However, her life only becomes more complicated when at an NA meeting she finds herself undeniably drawn to the very charismatic and damaged fellow addict Tom (Marc Warren).