Marth is prince of Altea and a direct descendant of Anri, the warrior who slew the shadow dragon Medeus. However, after an attack from the neighboring kingdom of Dolhr, Marth is forced to become an exile in the neighboring nation of Talis. His sister Ellis is taken hostage after his father is killed
battling the evil priest Gharnef. With the help of the Altean knight Jagen, the Talisian Princess Caeda, and others, Marth embarks on a quest to find the sacred sword known as Falchion and the Fire Emblem that will allow him to wield it. Only then will he be able to confront Gharnef and the resurrected Medeus, win the kingdom of Altea back, and rescue his sister.