Menace and Co

Walter makes the most of his summer holidays and sells muffins and lemonade from his front yard. Dad's boss, Scrimp, is impressed with his enterprising ways. Dennis takes Dad his lunch, and both he and Dad discover that Walter has been hired over the summer holidays as Dad's assistant. The problem is that Walter is super efficient and makes Dad look bad.

Dennis resolves to try and help Dad, but it goes wrong when Dad pulls off Scrimp's wig. Dad is demoted and Walter continues to impress Scrimp. Dennis relies on the help of his friends to go undercover and help Dad get his job back.