Percy Jackson, Annabeth Chase, Sadie Kane, and Carter Kane fight Setne as he tries to take over the world using combined Greek and Egyptian magic.
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|Magical Locations:||Aeolia | Camp Fish-Blood | Camp Half-Blood | Camp Jupiter | Cave of Trophonius | C.C.'s Spa and Resort | Daedalus' Workshop | Lotus Hotel and Casino | Mount Othrys | Ogygia | Olympus | Pan's Cave | Sea of Monsters | The Labyrinth | Tartarus | Underworld | Waystation|
|Cities and Towns:||Atlanta | Athens | Anchorage | Bar Harbor | Bologna | Buford | Chesapeake Beach | Chicago | Colorado Springs | Denver | Detroit | Gila Claw | Houston | Indianapolis | Jamestown | Los Angeles | Las Vegas | Leeds Point | Miami | Montauk | Nashville | New Orleans | New York City | Oakland | Omaha | Palm Springs | Paris | Quebec City | Richmond | Rome | San Francisco | San Juan | Seward | Sparta | St. Augustine | St. Louis | Tahlequah | Vancouver | Venice | Virginia Beach | Washington, D.C. | Westport|
|Administrative Divisions:||Alaska | Arizona | British Columbia | California | Colorado | Connecticut | Dalmatia | Florida | Georgia | Illinois | Indiana | Kansas | Louisiana | Maine | Maryland | Michigan | Missouri | Nebraska | Nevada | New Jersey | New Mexico | New York | Ohio | Oklahoma | Oregon | Puerto Rico | Quebec | South Carolina | Tennessee | Texas | United States Virgin Islands | Utah | Virginia | Washington|
|Countries:||Canada | Croatia | France | Greece | Italy | Portugal | United States of America|
|Continents:||Africa | Europe | North America|
|Other Locations:||Atlantic Ocean | Apennine Mountains | Aunty Em's Gnome Emporium | Calvert Peninsula | Caribbean Sea | Carlsbad Caverns | Central Park | Crusty's Water Bed Palace | Empire State Building | Gateway Arch | Grand Canyon | Hoover Dam | Junkyard of the Gods | Mediterranean Sea | Mississippi River | Mount Diablo | Mount Etna | Mount Saint Helens | Mount Tamalpais | Oakland Airport | Panama Canal | Pikes Peak | Plaza Hotel | Polyphemus' Island | Rocky Mountains | Rainbow Organic Foods & Lifestyles | Roman Empire | St. Thomas | Triple G Ranch | Waterland|