Sadie Nathanson spends her life trying to survive the excruciating embarrassment of simply existing. It’s hard enough being a bit of a shrinking violet within a loud and outspoken extended family, but the unexpected card from ‘Dad’ on her 15th birthday is the last straw. As ‘Dad’ was an Internet sperm-donor, it doesn’t take a genius to work out that this is a bad joke, probably set up by her ex-best-friend Shonna. But it starts Sadie wondering – just who was her father? Is he the cause of her worry crinkle and wonky bum? What would happen if she tracked him down? So she decides to do just that. With help from her nerd cousin Billy, his friend Nodding Tony and a regular dose of ‘Haironomics’ (Sadie’s own hairstyle-related philosophy system), they uncover a lot more than they bargain for...

Sadie Nathanson's back - with more style and tangles than ever before. "Mrs Nellist came in for her cut and colour while Auntie and Tiffany were out the back having a coffee, leaving me to sweep up, and that's kind of where everything got really ugly. It was the hairstyle that Mrs Nellist never knew she wanted. That's all it was about. I don't know why everyone had to go so completely hysterical about it, but that's my family for you." Sadie Nathanson is back! After sorting out exactly who she is, she now feels ready to tackle who she is going to be! With hair as her focus, Sadie decides to enter a major hairdressing competition - though she has her work cut out for her when she gets fired from her Saturday job in Auntie Lilah's salon. And if that's not bad enough, it turns out there are yet still more surprises in store Dadwise...