When Percy receives a distress call from his best friend, Grover, he prepares for battle. He knows he’ll need his powerful demigod allies, Annabeth and Thalia, at his side; his trusty bronze sword, Riptide, and . . . a ride from his mom. When they arrive, the demigods find more than just mythological monsters awaiting them. Grover has made an important discovery: two new half-bloods, Bianca and Nico, whose parentage is unknown.
But before Percy and his friends can escort Bianca and Nico safely back to Camp Half-Blood, they are intercepted by the manticore, and an impulsive move by Percy causes Annabeth to go missing.
And she’s not the only one: the goddess Artemis is believed to have been kidnapped. But who is powerful enough to kidnap a goddess? It’s up to Percy and his friends to find out. They must rescue Artemis before the winter solstice, when her influence on the Olympian Council could swing an important vote on the war with the Titans. But first, Percy will have to solve the mystery of a rare monster that Artemis was hunting when she disappeared -- a monster rumored to be so powerful it could destroy Olympus forever.
Used by permission of Disney-Hyperion