Spanky has a plan to get out of going to school in the morning. Alfalfa has stayed the night, and they convince Spanky's mom that Alfalfa is very sick, and that Spanky should stay home with him. When she finds out from Buckwheat and Porky that there's some fishing in their plans for the day, she goes shopping, and leaves Junior behind with the older boys. They try in vain to get Buckwheat to watch Junior, but only succeed in losing track of him. He ends up in a weight-reducing cabinet, and by some stroke of sheer idiocy, Spanky and Alfalfa both go in after him and lock the door behind themselves. Junior exits through the hole in top and turns the machine on.