Lucan - Susan Kearney

Lucan Rourke is on a mission to find the Holy Grail, a prize with the power to heal his world and ensure the continuation of mankind. Armed with a map of the stars and ancient legends that claim Arthur and his knights of the round table appeared on Earth as mysteriously as they disappeared, Lucan journeys to Avalon, an ancient archeological site on the planet of Pendragon.
But his 8-year quest is only beginning because Lucan isn't the only one seeking the prize.
Lady Cael of Pendragon is the only dragonshaper on her moon, fated to live life without a mate. In human form, she's earned her position on the Avalon research team but her people still fear her dragon's fire. Lady Cael needs to bring down Avalon's impenetrable shield so Pendragon can avail itself of their rightful heritage, a prize that can heal their beleaguered planet.
The passion between Lucan and Cael is immediate and undeniable but it's also dangerous.
They must not waver from their mission. Can they join forces and work together to find the Holy Grail? Or will their growing desire leave them vulnerable to the forces dedicated to stealing the Grail and destroying the universe?