Elthea's Nemesis - The Story of Elthea's Realm, #4

She once unleashed an evil foe into the world; now she must confront her dark past. Tess Armstrong had unwittingly created the wicked Bots, a regret she carried throughout her life. Today, she lives a peaceful existence in the Realm of Elthea until Philip Matherson asks for her help, turning her world upside down. The Bots have transformed Philip's closest friends into monsters, and the only way to save them is to uncover secrets from a pivotal event in Tess's youth. Together, they embark on a journey back in time to observe a race that is now their nemesis.
With the fate of his friends and the human village of Haven hanging in the balance, they must uncover the secrets necessary to end the Bots' reign of terror. As a clash between formidable powers looms, Philip will need more than his magical abilities to save the world from enslavement. The evil Bots seek something invaluable, and only by discovering their true desire can he prevail over them. Will the potent elixir of friendship, love, and redemption be enough to triumph over evil? Find out in this tale of unyielding determination and unwavering hope.