Lukas, orphaned when his ailing mother dies the same day when his father is murdered, is captured by an assassin's guild for apprenticeship.

He's then assigned to Helnoth, the land of dragon and man to help overthrow the government. Dragon king Abzu Joseph captures the Lukas, because the boy can see through dragons' disguises. Things go from bad to worse when the boy and Ebbarentine, a cursed dragon that must eat human flesh, are bound together as blood brothers to keep the boy alive. But things become completely complicated when Lukas was dropped into the worlds of dragons.

The blood-bonding causes Ebbarentine to go progressively insane, treating poor Lukas like a literal dragon, thus placing the youth in impossibly dangerous situations: Ebbarentine begins courting a gold dragon who despises Lukas, other dragons jockey to control Abzu Joseph through Lukas, and the assassin guild comes for retribution.

Which will kill him first?