第 3 集: I-401 抵達橫須賀，在政治壓力與突襲中奪取秘密彈頭
2013年10月22日 播出
Triumphant over Takao, I-401 enters the Port of Yokosuka to receive a sample of the top-secret warhead developed by the Japanese government. However, a powerful politician demands that Iona fall back under government custody. As the tension mounts, Yokosuka is suddenly subjected to cannon fire! (Source: Crunchyroll)