An international gaming event in Copenhagen turns deadly when several teenagers collapse from a lethal overdose. The media brands it a terrorist attack, but the truth is far darker - a dangerous new drug has hit the streets, and its origins trace back to an unlikely source.

Pat Woods, a down-on-his-luck Irish expat, stumbles upon a hidden stash of veterinary tranquilisers in his landlord's rural Norwegian cellar. Seeing an opportunity, he and his Scottish friend Angus, residing in Denmark, transform the potent drug into a highly addictive street product. What begins as a desperate bid for quick cash soon spirals into a nightmare as their creation claims lives and draws the attention of law enforcement across Scandinavia and the UK.

As the body count rises, Pat must try to outwit a determined network of ex-military operatives and local police.