Travelling to Malta in search of answers about his father's past, Alex and his best friends uncover the beginnings of a deadly plot by the criminal cabal known as Scorpia and the identity of its charismatic and ambitious new leader.

When the British Government receives a threat signifying Scorpia's return, Blunt and the Department begin the hunt. Meanwhile, in Malta, Alex follows the scientist working for them to his secret lab aboard a decommissioned ship.