In the year 320, Prince Arslan of the Kingdom of Pars, distinct from his warlike father, faces a harsh reality of betrayal and loss as the empire of Lusitania attacks. With his kingdom in ruins and enemies on all fronts, Arslan flees with the loyal general Daryun to seek support in reclaiming his homeland. But the challenges extend beyond battlefield foes, with rival kingdoms and a mysterious masked figure complicating Arslan's path to regaining his rightful throne. Determined and aided by newfound allies, Arslan must navigate treacherous waters to secure his place as the future king.