At work Nina is known as the Ice Queen, as her frosty demeanour makes her colleagues think she's equally cold in bed. But what they don't know is that she spends her free time acting out sleazy scenarios with her boyfriend, Andrew, in which she's a prostitute and he's a punter. But when Andrew starts inviting his less-than-respectable friends to join in their games, things begin to get strange and Nina finds herself being drawn deeper into London's seedy underworld, where everything is for sale and nothing is what it seems.