Donning high vis jackets and steel toe capped boots, the candidates travel to meet Lord Sugar in a South London builder's yard where they are given instructions on their new task.
Candidates have to generate as much cash as possible in the space of two days with a van full of tools.
Touting for business across London, the two teams set to work offering cleaning, gardening and DIY services to large and small clients.
One team get their hands dirty at a local football club, but the task is at risk when an overzealous candidate takes professionalism. Meanwhile, the other team attempts a refurbishment at the local theatre, but there's drama when simple measurements are done wrong.
Will the teams be able to rectify their mistakes and make the most profit?
Back in the boardroom, Lord Sugar throws a spanner in the works with two unprecedented moves as he utters the words: "Your Fired!"
Tune in to find out who is the fifth candidate to hear Lord Sugar's immortal words tonight (Wednesday 4 November) at 9pm on BBC One and BBC One HD.
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