Willow is a recessive omega, and he is the tutor of the nephew of a dominant Alpha Richard, the wealthiest among the wealthy. Richard is strict, doesn't like male omega, and only believes what his girl friend Olivia says. Olivia is a wicked and very jealous woman. But that changed when an intentional accident happened to Olivia, and Willow was accused. Then a mysterious so-called angel of fate arrives and gives Richard a capsule that contains his memories and promises for Willows from his past life. And Richard just learned that the angel of fate was the child they saved back then. This is the story that foretells the fate of two men from their past lives to their current lives. With a tender side story of the God of fate who falls in love at first sight with the angel of fate.

Hara, a simple, poor girl, lived with her family and earned a living through fishing. One day, while fishing at sea, a sudden storm struck, and a lightning bolt hit her. After regaining consciousness, Hara found herself in a strange room, where she noticed a girl in a hospital gown who appeared to be her own reflection in the mirror. As she tried to communicate with the girl, Hara realized that it was her own image staring back at her, which left her even more bewildered. A knock on the door brought in a wealthy couple, the elegant woman tearfully embracing Hara and calling her "Amber." This woman, who seemed familiar yet strange, showered Hara with warmth and kindness, creating a stark contrast to her previous life of poverty. As Hara struggled to comprehend these unusual events, she began to wonder about the identity of this mysterious "Amber," whom the woman had called her. Perhaps a past incarnation of herself? And if so, what happened to her original body and identity as Hara? She couldn't help but wonder about the nature of this mysterious transformation and the fate that awaited her in this unfamiliar world.