Corrupt Covenant

A pledge of eternal peace and prosperity sounds too good to refuse... unless, of course, the pledge comes from an immortal dragon.
A contract established in exchange for a king's life and the protection of his lineage should have expired when a desperate queen, facing hordes baying for her destruction, loses faith in the oath... but evil has a long memory.
Trapped for a millennium in a sarcophagus at the bottom of the Danube, death lay beyond the queen's grasp until the day nature, fate, and a mysterious archeologist joined forces to dredge her from her grave.
A life revived. A liegeman doomed to be reborn until he saves his queen. A dragon who has not forgiven an act of betrayal.
Can two souls, separated for a millennium, break the corrupt covenant, or are they fated to dance to the dragon's tune, for eternity?