It's an offer you can't refuse. Who would not wish to be the man in charge of Ankh-Morpork's Royal Mint and the bank next door? It's a job for life. But, as former con-man Moist von Lipwig is learning, the life is not necessarily for long.
The Chief Cashier is almost certainly a vampire. There's something nameless in the cellar (and the cellar itself is pretty nameless) and it turns out that the Royal Mintruns at a loss. A 300-year-old wizard is after his girlfriend and he's about to be exposed as a fraud, but the Assassins Guild might get to him first. In fact, lots of people want him dead.
Oh...and every day he has to take the Chairman for walkies. Everywhere he looks, he's making enemies. What he should be doing is...Making Money!