In a world where females are expected to be Omegas, Kaya Valen is the only female Alpha in her kingdom. Once a cherished daughter, she is disowned by her father after he discovers that she is an Alpha and brands her abnormal. Meanwhile, her younger sister Yuna, a beautiful and beloved Omega, remains in the castle, adored and pampered by everyone. Kaya turns to the battlefield, training to fight the beasts that threaten their kingdom. Her incredible strength and fiery red hair earn her the name “The Red knight.” When Zhen Kai, an Alpha King from a distant Chinese kingdom, loses his powers and becomes the target of assassins seeking his throne, he searches for a knight strong enough to protect him. Hearing of the legendary Red knight, he hires Kaya as his bodyguard. But what begins as a simple duty soon takes an unexpected turn.

London England, 1825 Annabelle, was a young South African girl,who was originally called kamari but her name was changed to the English name Annabelle. Annabelle was brought to London at the age of sixteen to serve in the household of the powerful devonshire family. Though she arrived as a servant, she never stopped dreaming of something greater. Ever since she was a child, she had longed to sing before a grand orchestra, hoping that people from every corner of England would one day gather just to hear her voice. The Duke of Devonshire treated Annabelle with kindness, caring for her as though she were a younger sister. But as the years passed, his affection quietly blossomed into something far deeper. Unknown to him, Annabelle had fallen in love with the Duke from the very first moment she laid eyes on him. Yet she buried her feelings, believing that a woman of her race and humble station could never belong beside a man of his rank. To Annabelle, love seemed as impossible as her dream of becoming a celebrated singer in the heart of London. The Duchess, the Duke's wife, despised Annabelle because of her race. She treated her with coldness and cruelty, never missing an opportunity to remind her of her place. As the years passed, the Duchess began to notice the Duke's unusual kindness toward Annabelle. Though he tried to hide it, his concern for her was impossible to ignore. Suspicious and consumed by jealousy, the Duchess repeatedly demanded that Annabelle be dismissed from the household. Each time, the Duke refused, offering one excuse after another to keep her under his protection. Yet he was careful never to reveal the true reason. In a society where his position, reputation, and marriage meant everything, his growing love for Annabelle had to remain a secret.