A prophecy of seven demigods from both the Greek camp and its Roman counterpart, Camp Jupiter, who must sail together to stop Gaia, the earth goddess, from waking and destroying both worlds. Where the original series followed Percy alone, Heroes of Olympus splits its narrative across seven characters, alternating perspectives to build an ensemble story about two traditions that have been kept separate for centuries and the cost of bringing them together. Direct continuation of Percy Jackson and the Olympians, beginning immediately after the events of The Last Olympian.