[Marcus.]

Housemates awoke to a mystery countdown clock on the living room wall. What could it mean?

Big Brother broke the news that a mammoth shopping task had been set with a total of five mini tasks to be completed, descending from five to one, with each task completed by the corresponding number of housemates.

Tasks five to two will be worth a percentage of the shopping budget with the big one – number one holding the key to all the shopping they have accumulated. The biggie must be completed by a single housemate, chosen by Big Brother and deemed the most courageous.

Housemates will decide between themselves who takes part in the other four challenges but there's a twist – naturally. They must pick the five unhealthiest, four smartest, three most similar and the two that least get along. Oh BB you are such a stirrer.

Each task will begin when the matching number flashes on the wall. As well as this BB will sound a klaxon willy-nilly to trigger mini tasks to be completed before the countdown runs out. Failure may lead to a reduction in shopping spends.