Gregg, Chris and Hala come to the aid of the very busy Butler family from Wales. Teachers Neil and Angela have two daughters with very different eating habits. 17-year-old Ffion is a disabled swimmer, born with one arm. She trains twice a day and hopes to represent Britain at the 2020 Paralympics. Ffion is a meat-loving athlete, whereas 16-year-old Alice is a committed vegetarian who usually ends up eating a different microwave meal from the rest of the family. Add to that Angela's love of pre-prepared, premium-brand products, and their shopping bill has become out of control. Can Gregg and Chris teach these teachers how to change their bad shopping habits?