A visit to the hospital gives Tom and Roy the perfect excuse to do battle for Sally's affections when she is called in for a knee operation.

Sally needs a favour from the guys: to escort her to the hospital when she has a knee operation. It's a favour they are only too happy to help with. The old guys immediately set about organising a visiting rota between them so as not to leave Sally alone, and press her for the best hospital gift she'd like during her stay. Sally is only too keen and readily nominates acceptable presents.

Meanwhile, Tom falls in love with halloumi, his latest food dependency introduced to him by local deli owner, Rajan.

As promised, Roy and Tom dutifully deliver an already-nervous Sally to the hospital, where her anxiety is not helped by the laid-back attitude of the very young-looking doctor assigned to her case. Convinced he is too young and probably sleeps in an incubator, Sally is worried that he might operate on the wrong knee - prompting the old guys to take things into their own hands to ensure that does not happen.

Roy, disgruntled that his local bookshop doesn't have the title Sally subtlety requested for her stay, spots an opportunity to get one over on Tom in his bid to win Sally's affections and sneakily pinches it from another patient. Not expecting to get found out, things start to go from bad to worse for Roy who finds himself adopting a strong Scottish accent. Meanwhile, Tom becomes the centre of attention in a student case study.