Hunter and Mercy are twin sisters and real hereditary witches. Back in the 17th century, their ancestor Sarah Goode was sentenced to death for witchcraft. But she managed to escape thanks to her own strength. Since then, the Goodwill family of witches is alive and well, and special magic flows in their blood. For a long time, girls grew up like ordinary schoolgirls. But now it’s their turn to find out what it means to be Guardians of the five Goodwill Gates - ancient portals separating our world and the Underworld. When Hunter and Mercy's mother dies during another witch ritual, the girls vow to avenge her death. Perhaps their spells allowed one of the monsters to break into the human world. Now the sisters must unite to curb the ancient evil that is about to engulf their small town. But is there enough magic for this? Or the sacrifice may turn out to be exorbitant, and fate will separate the sisters forever?