In smoggy 1960s Yorkshire, a world away from the psychedelics of London, Mo arrives at the dingy building in Dewsbury where she is going to be a temp. She is not welcomed, instead she is ridiculed - a fat stupid girl running about like a frightened mouse. Merv though, the charismatic co-Director of the company, sees something in her that he needs and takes her aside to be his PA. He uses his power and smooth transatlantic charm to shape her to his needs, letting her into his high flying world where there is glamour she has only seen in black and white on the TV, and showing her off against the hair-sprayed, stiletto heeled PAs of big companies. But he also shapes her with his brutality and so Mo must learn how to be right when it matters, to second guess his moods, and to survive without friend or family to turn to because in 1971, she is the one who is wrong.