In families touched by bad luck, during a full moon, is sometimes born a cambion. Horned, clawed and tailed, the small half demon child is often disposed of. Helianthes’ family decide to keep him, and nurture him, despite his hellish condition. The rambunctious cambion, armed with a demon forged knife and a tired bodyguard imposed by his family, decides to take to the streets causing trouble and exorcizing demons.