The Dragon Hour — Connie Flynn

As ruler of the land of Lochlorraine, Caryn finally has the power and freedom she'd always wanted. But a botched experiment has left her kingdom floating in a time bubble, where it is plagued by a terrifying dragon. The people of Lochlorraine desperately want to return to their own time. They long for the day when the dragon will be destroyed. They wait for the legendary Dragon Slayer.

When modern man Luke Slade is transported back through time to medieval Lochlorraine, the villagers welcome him as their savoir, the Dragon Slayer. Caryn urges him to kill the dragon - and although he resists her pleas, he can't deny that he feels at home in her strange and wonderful land. But when a dark force from Luke's own world threatens his newfound happiness, he realizes that the fate of the kingdom lies in his hands and in his heart....