Wilson asks if it was cancelled, but Mainwaring admits he did not go after all as his wife, Elizabeth, does not like being in the house on her own during the air raids.
Mainwaring agrees to turn a blind eye, as long as Wilson brings the men back straight away.
They receive a phone call from the police, informing that an Irish Republican Army suspect has been spotted in Ivy Crescent.
The ARP Wardens win the darts match, and Walker is reluctant to stay any longer.
Suddenly, three angry Irishmen arrive, with the largest one grabbing Godfrey by the collar, and demanding to know where Mainwaring has taken his brother.
Godfrey informs Mainwaring of the predicament, which causes the suspect to call out for his brother (and which prompts Jones to threaten him with his bayonet).
The Verger arrives in a panic, carrying an empty bottle, and informs Mainwaring that he has locked the three men in the church hall, before devolving into his usual complaints about Mainwaring's "misuse" of church property, which in turn prompts Jones to call him a "troublemaker".
As the two argue, the Irish suspect replies that they are both troublemakers, which causes the Verger to shut him up by smashing the empty bottle over his head.
In response, Wilson asks Jones to open the door for him, and exits the office into the church hall, where the three Irishmen are waiting.
Listening to the fight through the door, a horrified Mainwaring and Jones think that Wilson is receiving a terrible beating at the hands of the Irishmen.
They are therefore shocked when Wilson returns after a few moments, looking none the worse for wear apart from some bruised knuckles, having defeated all three IRA members single-handedly.
Hodges is terrified and leaves, and Mrs Pike eagerly tells Wilson they should have an early night in.