Hidden Half-Bloods 2

Helena wakes up with no memory apart from her name. She's running from three screaming bird-ladies, carrying a magical bident that makes her skin start to zombify. Grant, son of Hephaestus, comes to her rescue with his plumes of fire and charming smile.

Kalan also wakes up with no memory apart from her name. She has landed in a strange camp that is being attacked by wolves, and she has no idea what to do. She is saved by a mysterious guy who can transform into a leopard and another guy who wields a glowing golden spear.