Rory Chasen, now the manager of the Lucky Dog Boutique in Destiny, California, is delighted when her closest friend Gemma Grayfield, a librarian, comes for a visit. But Gemma arrives early and seems upset. It turns out she has broken up with her boyfriend, Frank Shorester. Gemma is soon hired to manage the Broken Mirror Bookstore. Frank follows her to Destiny, where Gemma is also wooed by two local men. Rory may be a little jealous—until one of those men, Deputy Mayor Bevin Dermot, turns up dead. Bevin is known for knocking on wood for everything, but despite Destiny being all about superstitions that did not save his life.

Rory tries to help Gemma clear herself of being a murder suspect, even counting on her lucky black and white dog Pluckie to help. But is Gemma guilty of murder—or of just having a run of bad luck?