After the Shield Hero and his loyal fighters fought off assassins who appeared out of nowhere, targeting Raphtalia and making it clear that they will not rest until they achieve their goal, Naofumi decides to go to the distant and mysterious country of Kutenro, to nip the problem in the bud. But since, by all indications, the country’s top leadership is sending the killers, his retaliatory attack is tantamount to a declaration of war...