Gav and Steve went to the same school. They weren't friends. Their paths diverged for a few years, but now they're working in the same pub. Gav is assistant manager, while Steve is a barman paying his way through a master's degree. One night the streetwise Gav takes pity on the pseudo-intellectual Steve, and offers him a tab of ecstasy during their after-work pint. Steve is soon wiped out by the cocktail of booze and drugs, and Gav finds himself under attack from someone – or something – lurking in the cellar.