Special forces operatives Shion Kiryu and Makoto Shirosaki were tracking a secret organization. Upon arriving at the location, they found the body of a fallen comrade. Gunfire suddenly erupted as Night, a high-ranking member of the organization they were pursuing, appeared. Working together, they closed in on Night, but an unexpected turn of events awaited them. Shion was cornered with a gun pointed at her head—checkmate. Makoto quickly fired back, but was shot down by Baron, the organization's leader. To save Makoto, Shion was forced to agree to join the organization. But Baron imposed an even harsher demand: a humiliating act of degradation. Ordered to strip in front of the wounded Makoto, Shion had no choice but to submit. This was all part of her desperate battle to rescue him.