Aoki Hagane no Arpeggio: Ars Nova Movie 1 - DC

In 2039, humanity is thrown into crisis as sea levels rise to unprecedented heights. The oceans become even more perilous with the appearance of the Fleet of Fog—formidable forces modeled after historic warships—cutting off travel and communication between regions and leaving conventional counterattacks futile.

One of the few who can challenge them is Gunzou Chihaya, captain of the Fog submarine I-401 and its ally, Iona. Under orders from the Japanese government, Gunzou and his crew, Blue Steel, take on a high-stakes delivery: escort the Vibration Torpedo Warhead, regarded as humanity’s last chance against the Fleet of Fog, across hostile seas to the United States for mass production. Even amid escalating conflict, Blue Steel continues to pursue a path toward a peaceful end.