On their journey to Britannia, Yoshika and the others are assaulted by mysterious invaders called the Neuroi, menacing beings from another world. In order to buy time until reinforcements arrive, Major Sakamoto sallies forth alone, only to be met by a fierce attack from the opposition. Despite her best efforts she is driven back and ultimately cornered. Yoshika can do nothing but wait in terror inside the battleship.

Yoshika and her comrades are attacked by the Neurois on their way back from a mission in London, but gets help from Sanya who happened to be on a night patrol. As a result, Yoshika is given orders to serve the night shift, and must spend the night in the same room with Sanya, when an envious Eila barges in.

Yoshika launches alone against the out-of-control Warlock, desperately holding out as the other Witches race to join her and put an end to the monstrous hybrid of human and Neuroi technology.