Sandra catches Hallam on the phone to Patti and grows suspicious. Billy allows Donald to sit at the wheel of the pump ladder and switch the blue lights on, but then the alarm goes off and Pearce catches them out, yelling at Donald to get lost. Desolate and hurt, Donald seeks refuge in an old factory, where he has built a model fire station. Meanwhile, Blue Watch arrives at a City Farm, where a smith has set the straw on fire. They tackle the blaze and evacuate the animals. Sicknote rescues a scruffy, extremely ugly mongrel and decides to adopt it. Billy jokes about Kevin and Sally, so that Kevin pushes him. Hallam interrupts them and sends Billy to evacuate the pigs, but he falls into the mud while chasing after them and the others hose him down.Sandra confides in Jean about her worries about Hallam + Patti. Pearce meanwhile decides to go home by bus instead of getting a lift from Hallam like always. Jean is horrified when Sicknote appears with the mongrel and resolutely locks him up in the garden shed. George goes to sell chips and hot dogs from a van, but he can't handle a group of teenagers and the van goes up in flames. Red Watch appears to tackle the blaze and George is the laughing stock. Sandra and Hallam have a row about Patti and Sandra decides to go and tell her to keep her hands off her husband. In the resulting quarrel, Pearce takes Hallam's side, saying that he believes him that nothing happened, but Patti doesn't budge.Maggie's friend prepares a Chinese dinner for Blue Watch during the next shift. Pearce catches Donald at the wheel of the pump ladder and yells at him once more, telling him to never set foot in the station again. Bayleaf tries to smoothe things, but Donalds runs away. He goes playing with his model fire station, but the little fire gets out of hand and sets the old factory on fire. Blue Watch comes to tackle the blaze. Pearce goes to save Donald from the roof, but he's too terrified to let him come near, steps back and falls down into the yard.Sally is woken up in the middle of the night by police who are investigating her boyfriend's drug-trafficking. Next day she's so tired that she blows the swimming competition for the brigade. Nick goes to see Diana Bulstrode, but she tells him that he only loves Ariadne. Kevin goes to visit Sally to comfort her and they kiss.