The War Office plans a review of both the Home Guard and the ARP in order to decide which less fit soldiers of the first and less fit of the second should be transferred to the other corps. As this is the last thing that either group's men want, various tricks go towards making them look younger or older. After a field exercise proves the platoon's fitness is at best questionable, Mainwaring tries a terrible toupee, Wilson wears a corset, Frazer and Walker make money by using unsuitable beautician substances.
—KGF Vissers