The Greek and Roman demigods must simultaneously prevent the earth mother, Gaea, from waking and stop war from breaking out at Camp Half-Blood.

The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother, Gaea. Then they will have to sail together to the ancient land--Greece itself--to find the Doors of Death.

Finding out she's the daughter of Zeus is not what a foster kid like Phoebe Katz expected to hear from a talking statue of Athena. But when her beloved social worker is kidnapped, Phoebe and her two friends must travel back to ancient Greece and rescue him before she accidentally destroys Olympus.

Monsters, but not, monstrous, Gorgons Stheno and Euryale, sisters of Medusa and horrifying hags, damned and doomed, finally tell the story of how they were changed by each other as they struggled against the inherent conflict between sisterhood and individuality, myth and truth, vengeance and peace.