Detective Stanley has barely sat down for his breakfast pancakes when he receives an invitation he cannot refuse. The Natural History Museum has been raided on the opening day of the Bleat Mondrian show and Stan has been called to investigate. The most perplexing thing about the case: Nothing has been stolen! But now Stanley finds himself in a tight spot even his powers of deduction could not detect. Can he get himself out of trouble and can he solve the mystery of The Natural History Museum?