Birdy, or Shion Arita, gets a new assignment in Kobe where Sayaka Nakasugi live now. Tsutomu Senkawa is worried about her, so Birdy decides to pay her a visit. However, they are not the only one interested in Nakasugi.
The year is 1989 and the samurai Troopers are having a celebration for Ryou's birthday. However, Seiji has gone missing and there is a strange killer wearing samurai armor causing chaos in New York City. The Samurai Troopers have to go to New York and find a mysterious man saying he is Shikaisen.