The Sift Heads World series primarily focuses on Vinnie, Kiro, and Shorty. Vinnie meets the Mafia Leader Alonzo, and has been seeking vengeance on Vinnie, who has been cutting down and hurting the Mafia's business and plans to reestablish the Mafia's place in Chicago. The infamous bounty hunters are now set on an exciting new adventure to put an end to the Italian Mafia.