Maintenance is made on the lobby while the Fawltys are out, but when a misreading causes the incompetent builders to mess it up spectacularly, Basil must try to remedy the situation before Sybil finds out.

When Basil hears of hotel inspectors roaming Torquay incognito, he realises with horror that guests he has been abusing could easily be among them. Basil becomes increasingly obsessed with trying to determine which guests are hotel inspectors, but his suspects turn out not to be, to his frustration.