Both the upstairs housemates and basement housemates have been deprived of hot water on the first morning and Rylan was given the details of the opening challenge this morning.
[Celebrity Big Brother Day 1 - Photo Gallery]
The official Big Brother website reveals that the "chosen housemate will enter the basement section of the garden and face a series of blocked pipes - full of disgusting and putrid contents - which they must use their hands to unblock".
If they remove enough gunk from the pipes, the water level will switch from freezing to hot.
Celebrity Big Brother continues tonight (January 4) on Channel 5.