In Rick Riordan's "Percy Jackson and the Olympians: The Titan's Curse," Percy, Annabeth, and Grover are on a mission to rescue two demigods when they encounter the goddess Artemis and her Hunters. When Artemis mysteriously disappears and Annabeth falls into danger, Percy and his friends, along with the newly discovered demigod Thalia Grace, must embark on a perilous quest to find them. They face ancient monsters, powerful Titans, and a chilling prophecy that threatens the very fabric of Olympus. This thrilling adventure explores themes of loyalty, sacrifice, and the burdens of destiny as Percy grapples with the growing threat of Luke Castellan and Kronos's resurgence.