In order to fit in at Mount Olympus Academy, new girl and forest-mountain nymph Echo copies the mannerisms of all the other students, but instead of ingratiating herself to her classmates, it only seems to grate on them.

Priding herself on having the most up-to-date information about everyone at Mount Olympus Academy, gossipy Pheme sends VIP messages that linger in cloud letters above her head, a habit that raises the ire of her fellow goddesses.

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.

Jason, Piper, and Leo, three students from a school for "bad kids," find themselves at Camp Half-Blood, where they learn that they are demigods and begin a quest to free Hera, who has been imprisoned by Mother Earth herself.

Orpheus, a mortal rock god, asks Persephone to help him get the love of his life, Eurydice, back from the underworld, and Persephone agrees to enlist Hades help after she is voted most dependable by her friends, a label she doesn't want to have.

"Athena isn't the only new kid at Mount Olympus! When a mortal named Heracles transfers to the Academy, Athena understands what he's going through. She started there a few months ago herself. Not only does Heracles need help fitting in, he also has to complete twelve 'labors' or be kicked out of school!"

While protecting egotistical transfer student Orion, Artemis makes a mistake that later provides her with the chance that she has both hoped for and dreaded, to prove her courage to herself and others at Mount Olympus Academy.

"Who cut off Medusa's head? Who was raised by a she-bear? Who tamed Pegasus? It takes a demigod to know, and Percy Jackson can fill you in on the all the daring deeds of Perseus, Atalanta, Bellerophon, and the rest of the major Greek heroes. Told in the funny, irreverent style readers have come to expect from Percy --

"Athena, Medusa, Artemis, and Persephone are sick and tired of being left out of the annual boys-only Olympic Games. Their solution? The Girl Games! But as the Goddess Girls work to make their dream into a reality, they come up against plenty of chaos and competition. Told in alternating points of view, this super special is packed with Olympic spirit!"--Publisher's website.

Athena learns that she is a goddess when she is summoned to Mount Olympus by her father, Zeus, and she must quickly adjust to her new status, make friends with the other godboys and goddessgirls, and catch up with all the studies she missed while attending mortal school.