Caspian Grey, son of the Roman God Neptune, for he is the only camper in camp Jupiter who is the child of the Roman God of the Seas. Caspian is aware that he has a half-brother who was born in his father's Greek counterpart; He couldn't care less about his so-called half-brother in camp half-blood because he believes that both of them will never get a chance to cross paths with one another and even get along. His half-brother, Percy Jackson, is known for being a hero in camp half-blood and camp Jupiter, along with his friends who defeated the bad guys. The only family he cherishes is his mother, friends, and Peony Thermile; the youngest daughter of the Roman Goddess of Spring who has also been blessed by the Greek counterpart of her stepfather, Hades himself. Caspian sees Peony as his little sister, they enjoyed their life to the fullest and spend time together like a real family. Until an army of monsters attacked Camp Jupiter with no warning whatsoever. As Peony used her power to shadow travel that was given to her by her step-father to escape with Caspian, he was grabbed by the foot and was separated from Peony. Peony shadow traveled to a place called Camp half-blood, where she meets her step-siblings. Nico di Angelo and Hazel Levesque. What will Peony do? What happened to Caspian? Will they ever reunite once again? or be separated forever by the hands of faith?