After angering his father, Zeus, the god Apollo is cast down from Olympus. Now a weak and disoriented teenage boy in New York City, the four-thousand-year-old deity can think of only one place to go... an enclave of modern demigods known as Camp Half-Blood.

Leaving the safety of the demigod training ground, a disgraced Apollo embarks on a quest across North America to find a dangerous ancient-world Oracle while navigating the challenges of the evil Triumvirate.

The Greek god Apollo is still in the persona of ungifted human teenager Lester Papadopoulos. Now Lester and his demigod friends must go through the Labyrinth to find the third emperor-- and an Oracle who speaks in word puzzles-- somewhere in the American Southwest. But the longer he stays mortal, the weaker he grows... and the less confident that he will be able to regain his place on Mount Olympus.

Para castigar a Apolo, el dios del trueno decide mandarlo a la Tierra bajo la apariencia de Lester, un adolescente granujiento y sin poderes, claro. Ahora, el único modo que Apolo tiene de regresar al monte Olimpo es devolviendo la luz a las profecías de los oráculos que se han o curecido. Pero ¿qué podrá hacer un Apolo desprovisto de poderes? Tras superar una serie de pruebas peligrosísimas (y, para qué engañarnos, bastante humillantes)...

Turned into a human and banished from Olympus, Apollo must restore five ancient oracles to reclaim his godly powers. Apollo (aka Lester Papadopoulos) is now at Camp Jupiter in the San Francisco Bay Area, where the Roman demigods are preparing for a desperate last stand against the evil Triumvirate of Roman emperors. Hazel, Reyna, Frank, Tyson, Ella are among those who will need Apollo's aid to survive the onslaught. It may be time for him to call...

Will the Greek god Apollo, cast down to Earth in the pathetic mortal form of a teenager named Lester Papadopoulos, finally regain his place on Mount Olympus? Lester's demigod friends at Camp Jupiter just helped him survive attacks from bloodthirsty ghouls, an evil Roman king and his army of the undead, and the lethal emperors Caligula and Commodus. Now the former god and his demigod master Meg must follow a prophecy uncovered by Ella the harpy. Lester's...