Nach Rainas gescheiterten Verhandlungen mit Thanatos versucht Jin ein letztes Mal, Toa und die Menschheit zu retten.
Members of the Dragonaut team attempt to protect as many humans as they can from the billions of Ostrums sent by Thanatos. Meanwhile, Toa, Jin, and Gio try to approach Thanatos since Jin wants to persuade it to stop. Kasuga helps them get through by blowing himself up, taking out massive amounts of dragons in the group's way. Once inside, they are met with the original Ostrum, whom Gio decides to battle himself while Jin and Toa go on ahead. Jin and Toa then encounter Garnet, who sends Jin into a dream world where the shuttle accident never happened, however, Jin is able to snap out of it by following Toa's voice. As Gio is able to defeat Ostrum, the power of Toa and Jin's love for each other results in the deactivation of all the Ostrums, the disappearance of Toa's stigmata, and the appearance of "mother", who decides that she will think about the meaning of love as she moves on to the next planet. In the end, Gio leaves for space, and Jin and Toa are able to live on together.
本格化したタナトスによる侵攻に、人類は壊滅の危機を迎える。地球を守る力は、もはやドラゴノーツだけだった。
圧倒的な彼我の戦力差に、絶望的な戦いに赴くドラゴノーツ達。一方、トア、ギオと共に、ジンはタナトスの中枢を目指す。
タナトスの深奥で、ジンが見るものは？そして、トアとジンの愛の行方は――！？
今、全ての戦いに終止符が打たれる！
