Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.

"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"-- Provided by publisher.

What dangers do runaway demigods Luke and Thalia face on their way to Camp Half-Blood? Are Percy and Annabeth up to the task of rescuing stolen goods from a fire-breathing giant who doesn't take kindly to intruders? Four short stories plus original art, interviews, puzzles, and games, reveal new insights into the world of Percy Jackson and the other heroes of Olympus.

"Se aproxima un futuro difícil: lucha contra monstruos, aventuras por todo el mundo y enfrentamientos con dioses griegos y romanos. ¿A qué peligros se enfrentan los semidioses fugitivos Luke y Thalia cuando se dirigen al Campamento Mestizo? ¿Percy y Annabeth podrán recuperar los objetos que ha robado un gigante que respira fuego? ¿Cómo se supone exactamente que Leo, Piper y Jason tienen que encontrar una mesa andante, esquivar un grupo de Maeands...