Following a controversial loss at the Purley Cup, Poppy Orpington and her petrol-fuelled race car, Thunderbus, are dominating the headlines. But not one article is complimentary, or even unbiased. In spite of these daily slanderous reports on her character, Poppy is determined to make something of herself. She continues racing, she starts up her own factory hoping to sell her father's patented petrol-run cars, she buys her own house and speaks up for the down-trodden. But all the while she is still seen as just a woman. A woman unwilling to squeeze into the female mould created by men of power - and so the mould must be broken.