During the kidnapping incident, Orimura Ichika was caught up in a battle between Symphogear users and their enemy while they are transporting a relic. Not accepting the fact that he will be killed, Ichika activated the relic Durandal and a story spanning millenniums continued once more. Triple crossover with Saijaku Muhai no Bahamut.

2 years after the defeat of the Bugsters, Hojo Emu and Co, get summoned to another world, where creatures called Noise ravage the city and people who fight them with armor called Symphogear. Will Ex-aid and the other Riders save this world with no continues?