A boy who carries the heart of his dead lover. The culprit behind a mysterious murder. Together, they begin to uncover the truth!

Near-future, Vega City—a city-state where biotechnology has flourished. A horrific murder takes place: a researcher is shot in the face and killed. The victim’s son, Doil, is accused of the crime, but his only statement is that he saw “a monster.” When even the coroner suddenly disappears, the case plunges deeper into mystery.

Years later, Ethan, a detective’s assistant and bodyguard pursuing the case, encounters Doil through an anonymous tip. To his shock, he discovers that the boy has been transplanted with the heart of his deceased lover, Eve. Though wary of each other, Ethan and Doil sense that something far more sinister is lurking behind the murder. Determined to face the truth, the two form an uneasy partnership that leads them straight into the darkest secrets of Vega City.

What is the true identity of the monster that killed Doil’s mother? And was it really just chance that Eve’s heart ended up inside him?

Original Webtoon