Dad's decision to solve the Patterson family's overcrowding problem by building an extension on their house brings both excitement and an unexpected problem.
Mother has to go out, so George has come to look after Mike, Jenny and baby Sue. George is a very capable young man, and he makes it clear from the start that everyone is to help out in doing the daily chores. However, Mike, Jenny, and baby Sue's assistance may be more than George had bargained for.
