Season 1
8 episodes
47 min. per episode
Where to watch
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A skilled submariner battles loyalty and secrecy as Cold War tensions escalate, risking everything for truth and survival.
Episodes
The MSDF submarine Yamanami collides with a U.S. nuclear submarine, crushing all 76 people on board. Hiroshi Fukamachi, CO of the MSDF submarine Tatsunami, becomes suspicious of the accident and analyzes the recorded data of the collision.
The Seabat, a state-of-the-art nuclear submarine hijacked by Kaieda, surfaces in front of the U.S. Seventh Fleet, which has assembled to sink the Seabat as it is considered a terrorist threat. There, Kaieda makes a startling declaration.
Fukamachi's diesel ship Tatsunami arrives in the area, where the operation is in a standstill after Kaieda's declaration. In an attempt to stop Kaieda, Fukamachi boards the Seabat.
Kaieda finally begins to combat the U.S. forces. Three nuclear submarines of the Seventh Fleet close in on the Seabat. Chief Cabinet Secretary Wataru Unabara heads to a summit meeting with U.S. President Bennett.
A summit meeting is held, but neither country concedes to the other's claims. Meanwhile, the US. Third Fleet launches an anti-submarine missile at the 2nd MSDF convoy led by Commander Numata, which has been dispatched to escort the Seabat.
During the Cold War, the Japan Maritime Self-Defense Force jointly developed a nuclear submarine with the United States Navy.