When the young Selena Liongod unexpectedly became the companion of the noble and gifted dragon named Thor, the new and powerful recruits within Her Imperial Majesty's Air Force proved their tenacity in combat against the Lich. Though the pair are declared war heroes in the Battle of Alfheim, they now face a new danger threatening Armageddon.

As the Day of Eternal Darkness draws nigh, the elven city of Alfheim is suddenly attacked by powerful masked dragons. The Council seeks to launch a daring offensive in response to the assault and the upcoming eclipse, waylaying Selena and Thor with urgent orders. Four special dragon eggs-the offspring from the fabled Mythic Flight guardians-have been purchased from Snowhaven to turn the tides of war, and Selena and Thor must deliver the precious cargo to the Water Kingdom capital.

They find themselves in a race against time to travel across the Empire to deliver the eggs before hatching, their voyage fraught with peril, deception, and the untold terrors of the deep. Yet once the pair reaches the capital, more discoveries and darker dangers await.