Jack and his friends desperately search for the rest of the lost Loculi and confront the armies of Artemis in order to rescue Aly, who has been pulled back into Atlantis by King Uhla'ar.
Racing against time to unearth the last four Loculi, Jack and his friends prepare for battle against the seven ancient wonders as well as the Massa who have taken over the Karai Institute and convinced Marco to change sides.