Imagine a drug that made your brain function to its full potential. A drug that allowed you pick up a foreign language in a single day. A drug that helped you process information so fast you could see patterns in the stock market.

Just as his life is fading into mediocrity, Eddie Spinola comes across such a pill: MDT-48 - a sort of Viagra for the brain. But while its benefits materialise quickly, so do certain unwelcome side-effects. And when Eddie decides to track down other users, he soon discovers that they're all dying, or already dead...