Arthur must enlist the help of his half-brother Orm in order to protect Atlantis against Black Manta, who has unleashed a devastating weapon in his obsessive quest to avenge his father's death.

Set in the summer of 1957, with Enzo Ferrari's auto empire in crisis, the ex-racer turned entrepreneur pushes himself and his drivers to the edge as they launch into the Mille Miglia, a treacherous 1,000-mile race across Italy.