Unbeknown to Harry and Saffy the evil Vuples Syndicate have infiltrated the peaceful countryside of Hiddeyhole and Tail and set up an international crime ring trading in the illicit Mousee and Blood Diamonds. Harrys and Saffys new found friends from Spy School must help them to overcome Mr Vernon Fox, Rubeeee Roxy Foxy, Callum Cocky Fox and Gunky Fox along with the rattus rattus gang to bring peace again to their beautiful farm. Will they be able to crack the codes? Will Forest Teriyaki McTwittle, the Thane of Felinnnne be able to stay away from the Mousee?.