When three leprechaun statues disappear just before St. Patrick's Day, Bradley, Brian, Nate, Lucy, and other friends follow clues in order to prove that Lucky O'Leary is innocent of the crime.
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.