May 9 (UPI) -- Max released a teaser trailer for the second season of DC Studios series Peacemaker , starring John Cena . The new season will debut Aug. 21. Season 2 consists of eight episodes and will feature Cena reprising his role as the DC Comics antihero he previously portrayed in The Suicide Squad and Season 1 of Peacemaker . "The new season follows Christopher 'Chris' Smith, aka Peacemaker, the vigilante super hero, as he struggles to reconcile his past with his newfound sense of purpose