Sierra has felt pain all her life,never meeting her father her mother leaving her when she was three and living homeless only allowed at school out of charity while everybody made fun of her for he clothes and how shes homeless.And suddenly percy shows up forcing her to camp half blood trying to tell her that she's part god.She cant handle it she runs away but soon is captured by a Cyclops and Percy has to save her but now that Hades kidnapped Annabeth they have to travel to the underworld to save annabeth.oc/percy