The adventures of two unlikely best friends. It is the day of the month when Big walks off to collect the mail and so the day that Small can be the boss of the house. But before Big leaves, he hands Small a long, long list of things Small Shouldn't Do. These start off sounding reasonable (do not dance on top of the sink), but quickly become extreme: no music and no games. No fun, complains Small. Left to his own devices, Small decides to tear up the list and have fun instead (which includes dancing on top of the sink). However, it is no fun having fun on your own, and Small very quickly misses Big and wants him to come home. When Big does arrive back at the house, he sees a sad-looking Small and realises that his list was far too strict; Small should be having a good time in the house.