As the brilliant young marketing director of a confectionary business, Matt has an intimate relationship with chocolate. To him, chocolate is not only the world's favourite flavour, it is also an extremely potent marketing concept. It means luxury, sensuousness, sweetness and innocent joy. It is a substance to be adored and worshipped, and exploited at every opportunity. To Matt, chocolate is a way of life. For Sam, chocolate is something far more sinister. She's working on a TV documentary about it, which helps take her mind off her mess of a love life, and she's discovered that the subject is not as sweet as she thought it would be. While Western children cram their faces with the stuff, African children are dying in horrendous conditions to produce it. Sam is soon unwilling to consider chocolate as anything but unpleasant - and since Matt's own company is one of the worst offenders, he is unpleasant by association. When they are locked into a chocolate factory together, sparks are bound to fly. Surrounded on all sides by the cause of their discord, Sam and Matt are united only by a desire to find a way out. But the doors are locked, the windows have grilles on them, and their repeated attempts at raising an alarm to the outside world fail. As they gradually begin to realise that they are stuck with each other, they are finally forced to take a good look at the real reasons why they find it so difficult to get on.