Arslan, the fourteen-year-old crown prince of Pars, rides into his first battle only to see his army shattered and his father, King Andragoras III, lost amid an invasion by the kingdom of Lusitania. Forced to flee the fallen royal capital of Ecbatana, Arslan gathers a small band of allies, among them the loyal warrior Daryun and the cunning strategist Narsus, and sets out to reclaim his country. This manga adapts Yoshiki Tanaka's novel series, with art by Hiromu Arakawa.