Sicknote starts worrying about his balding skull, but Jean only laughes at him. Charisma returns to Blackwall after some years and is joyfully greeted by his old friends. Nick, though, is rather stunned about his glib talking. George asks Jaffa to take over one-two hours for him so that he can start working at the theatre in time. The fake firemen are caught out by an old lady whose grandson is in the brigade and recognizes the old uniforms. Blue Watch is just doing a ladder drill, when the alarm bell goes off. Nick's crew leaves while the others continue the exercise on their own. They enter the kitchen in BA and frighten Maggie, who accidentally kicks a hose. The jet goes off and sprays the whole kitchen. Sandra's new boss makes a pass at her and Claire goes investigating about bouncing cheques. George leaves the station early and Jaffa takes over for him, just as Blue Watch is called to a huge explosion. A gas depot is on fire and all the gas bottles go off like missiles, setting houses on fire and making work dangerous. Just as Jaffa is calling for reinforcement, one gas bottle hits the pump which explodes in a huge ball of fire.