Our hero Charlie Parker adopts a greyhound puppy from the Greyhound Adoption Agency. He calls the dog Chuckles and the two with Charlie's friend Chester become inseparable. The boys teach Chuckles amazing tricks and experience a number of funny and exciting situations. Charlie doesn't realize that two crooks, Scar and Dave watch the development of Chuckles and try in a hilariously unsuccessful attempt to steal Chuckles to race as a greyhound. Scar observes Chuckles' affection for Mr Bentwhistle's poodle Fiffi. Scar uses Fiffi to 'get to' Chuckles. They snaffle the dogs and hide them at S and D Tomato Farm where they are planning to paint and disguise Chuckles. However, Mr Bentwhistle being an ex SAS soldier devises a plan for Charlie and Chester to bravely rescue Chuckles and Fiffi.