In a world where angels and demons secretly influence human lives, an angel named Arella defies her celestial brethren by falling in love with a human and giving birth to a daughter, Mia. To protect her child, Arella sacrifices everything, leaving Mia to grow up unaware of her true heritage. As a teenager, Mia discovers her angelic wings and struggles to conceal her identity while navigating high school life. When a mysterious boy named Alex uncovers her secret, Mia's world is turned upside down. Together, they face unimaginable dangers, including a demonic force that threatens her family. "Delinquents Angel" is a gripping tale of love, sacrifice, and the eternal battle between good and evil.