The Keepers' Gifts - The Dragon Keepers, #2

A year has passed since the events of The King's Dagger that sent Rick and Wren on a death defying journey. Their training has taken on a new urgency as they strive to protect both the hatchlings under their care and the dragon riders. But that training will be put to the test much sooner than either could anticipate as outside threats force them from the safety of the lair once again. Rick Kerell.The trolls have launched an invasion resulting in the destruction of Rick's childhood home.
Hoping against hope that his parents are alive, Rick joins a wing of dragons who plan to mount a defense against the unexpected attack. He arrives to find a kingdom gripped with terror and an unrelenting troll army spurred on by a familiar enemy. Wren Trellis.Wren is sent on a journey of her own when the discovery of a rare gift places her in the center of an operation to rescue a stolen dragon's egg.
It's a race against time to rescue the helpless egg before the hatchling growing within is lost forever. Amara Orealin.As dangers continue to threaten the citizens of the Kingdom of Nataria, Princess Amara struggles with the expectations of a princess while working in secret to uncover a hidden threat to her home. The discovery of an unknown traitor forces Amara to turn to her half-brother's most trusted spy for help.
But the looming danger might be too much for a princess and a lone spy to handle.