Dot, her best friend Beans and her dog McClusky all love sniffing out a good mystery and together they will solve the case and save the day . . . It's the last week of school term and the children are looking forward to the School summer fair. Dotty and best pal Beans will be looking after pet's corner, starring McClusky and his two canine pals: Geoffrey and the little sausage dog puppy, Chipolata. But just days before the fair disaster strikes – Chipolata has gone missing. Dotty and Beans get on the case. Can they solve the mystery of the missing puppy?