The state-of-the-art nuclear submarine Seabat, which was hijacked by Kaieda, surfaces in front of the U.S. Seventh Fleet, which assembles to sink the Seabat as it is considered a terrorist threat.

In an attempt to stop Kaieda, Fukamachi boards the Seabat.

Kaieda finally begins to combat the U.S. forces; Wataru Unabara heads to a summit meeting with U.S. President Bennett..

A Japan-U.S. summit meeting is held; the U.S. Third Fleet launches an anti-submarine missile.