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.

Modern-day demigod Percy Jackson tells the origin stories of major Greek heroes, including Perseus, Bellerophon, and Atalanta, while offering his own personal take on his ancient associates.

"Will the Greek god Apollo, cast down to earth in the pathetic moral 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...

"It's not easy being Apollo, especially when you've been turned into a human and banished from Olympus. On his path to restoring five ancient oracles and reclaiming his godly powers, Apollo (aka Lester Papadopoulos) has faced both triumphs and tragedies. Now his journey takes him to 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,...

"If you could choose to be a god forever, would you do it? Every winter solstice, today's Earthly descendants of Greek gods, nymphs, and muses must visit Mount Olympus to preserve their near-godly status. Until Dorothy's mother refuses to go, sealing her fate and dying a human death shortly after. In retaliation, the gods release an ultimatum: return to the heavens as gods or live as humans on Earth. Everyone must now make a choice. Dorothy is already...

Zeus and the rest of the Olympians try to rescue Artemis from the clutches of a titan named Crius who has her under a sleeping spell.

"A clash between the Titans and The Olympians at sea leaves Zeus and his friends shipwrecked--and in a tidal wave of trouble--in this Heroes in Training adventure" -- "After an encounter with Uranus, God of the Sky (and father of the Titans), the Olympians find themselves in the middle of a battle between two big-time Titans. On Cronus's orders, Titan Oceanus dives into the sea and causes it to turn even stormier. He's heading straight for the Olympians'...

"Demon's life on Mount Olympus has never been busier. Thanks to the awful heroes down on Earth, Demon has even more injured beasts to care for. And worse still, the goddess Psyche wants Demon to "borrow" Zeus's prized eagle for an urgent mission. But is her task worth the risk of offending the king of the gods?"

"Demon, the official Olympian beast keeper, is caught between Helios and Poseidon, who are planning a race to see which of their steeds is the fastest, but both vengeful gods have requested Demon's help, and he can choose only one"--

After capturing jealousy from a priestess in Crete, Pandy, her friends Alcie and Iole, and her little dog Dido, brave many obstacles as they travel to Egypt in search of the second of the seven evils--vanity.