It's winter and the Pinkers are out of shape - so Dad decides to usethe wholefamily to test out his ideas for a new fit-in-four weeks diet book.

Butafter a few weeks of earlymorning runs and cardboard flavoured ready meals, (meaning Peony needschips and double helpings of pudding at lunch every day to make up)Peony's become so unfit can barely walk up thehill home. And she's supposed to be climbing Mount Snowdon in just afew weeks!

Can Granget the family back on track with some wise words and common sense?Hilarious family comedy with a self-help twist.