After being dismissed by the crown prince for his perceived incompetence in magic, Alec Ygret, a former court magician, finds solace with a friend from the magic academy. Invited to join a dungeon conquest once more, Alec embarks on a new adventure with his old companions, rekindling his path in life. This tale unfolds around a once-renowned party known as the 'Lasting Period,' who, four years prior, gained legendary status and now echoes throughout the world.