Gary wants to leave his girlfriend, Dorothy, but she decides to leave him first. Gary owns a flat and needs a lodger to help pay the mortgage. Unfortunately, he's got Dermot as a lodger and he's no help at all. A young woman named Deborah moves into the flat upstairs and Dermot immediately decides he's in love with her. The feeling isn't mutual though!

Gary and Dermot play chess to decide who will win an evening of pleasure

Gary tries to impress Deborah by installing a burglar alarm while Dermot tries to impress her by offering his body!

Gary suggests to Dorothy that they should have an ""open relationship"". Much to his surprise, she agrees. Dermot makes greater efforts to get somewhere with Deborah

Gary thinks that he's been offered a new job so takes his staff out to dinner so that he can tell them that he's leaving! Will he be correct? Meanwhile, Dermot loses his job after he dangles a customer by the ankles.