Bismarck & other iron blood ship girls lost contact with mobius 1. Commander destroyer & secretary atago sends her off to save him. His iff was last seen flying towards a mysterious floating fortress. Ulrich von hutten wakes up nearby teleporter but she has mobius 1 on radar at the fortress. Whats strange is that there's another one like him & there's a few iron blood girls & a bismarck look alike. Few meta girls are surprisingly cipher & zuikaku are here too. Whats happens next.