
Between the events of the original Ninja Gaiden and Ninja Gaiden II: The Dark Sword of Chaos,[5][6] CIA agent Irene Lew is chased by a man who looks like Ryu Hayabusa to a cliff edge, where she falls to her apparent death. In an effort to clear his name, Ryu investigates the laboratory where Irene was killed. A mysterious man appears there and tells Ryu to go to the Castle Rock fortress, where he will give Ryu more information about Irene.[7][8]
Hunt for Red October, The (USA) (Rev A)