As teenage werewolf Kalix MacRinnalch is pursued through the streets of London by murderous hunters, her sister, the Werewolf Enchantress, is busy designing clothes for the Fire Queen. Meanwhile, in the Scottish Highlands, the MacRinnalch Clan is plotting and feuding after the head of the clan suddenly dies intestate.

As the court intrigue threatens to explode in all-out civil war, the competing factions determine that Kalix is the swing vote necessary to assume leadership of the clan. Unfortunately, Kalix isn't really into clan politics - laudanum's more her thing. But what's even more unfortunate is that Kalix is the reason the head of the clan ended up dead, which is why she's now on the run in London . . .