Jill Russell has a secret, and Foxie is as angry as a terrier can be. Someone tossed a packet of biscuits over Foxie's fence, and Auntie Tidge took them away. This means war. Since Foxie adores Auntie Tidge he has to fight with someone else- Jack.
'But Foxie isn't the only dog acting strangely. Lord Red has found something interesting down at the reserve, and soon all the dogs of Doggeroo are playing hunt the biscuit. Bellyaches result, the vet is cross, and the dogs find themselves under house arrest. All but Jill Russell, who is much too busy for biscuits. Finally, Jack solves the case, but can he ever look at a biscuit again?' (Publication summary)