Yuji learns the horrible truth about the Blue. Their infestation of the planet has forced the human race to seek refuge in outer space. migrate to a Second Earth in outer space. Marlene and the Sleeper Recovery Team have been given orders to get Yuji to space station Second Earth alive. But with the Blue lurking around at every turn, things do not always go according to plan.

Tired of feeling helpless in this new hostile world, Yuji pleads to be trained as part of the team. Marlene gives Yuji a crash course on weapons. Joey teaches him the basics of driving a mech suit. Armed with his new skills and his newfound confidence in his ability to survive, Yuji is ready for action. But against an enemy like the Blue, overconfidence can be deadly...

Yuji disobeys Marlene's orders by saving a little girl's life, and discovers a group of survivors hidden among the ruins of the city. Yuji makes promise to the little girl, Yung, that he will protect her from the blue. But this new cause is threatened when he learns a shocking truth about his rescuers from Second Earth.

The surviving members of the Sleeper Recovery Team must enter an abandoned communications tower that is now a Blue nest in a desperate attempt to contact Second Earth. With the Blue now converging on their position, the only chance of staying alive is to draw the Blue into a fight using human survivors as bait. Yuji has promised to protect Yung at any cost -- but is it a promise he can keep?

Marlene and Yuji now travel on foot towards Balinonur Space Base. The tensions between the two come to a head, as Yuji confronts the demons that now haunt him in this nightmarish new world. As she witnesses Yuji's struggle, Marlene's own horrifying memories of the past begin to resurface. But can even Yuji's fiery emotions help to melt away Marlene's icy exterior?

Still en route to Baikonur, Marlene and Yuji cross paths with a rough mannered stranger named Dice. With the Blue lurking dangerously close, he offers them shelter for the night and Yuji is given a glimpse into his seemingly carefree life. But as Yuji soon discovers, no one left on Earth is without their demons...not even Dice.

Yuji is seperated from Marlene and Dice amidst the confusion of a sandstorm. He is rescued from the desert by a band of nomads, and is befriended by Elena, a young nomad girl. As Yuji begins to believe that a peacefull life might still be possible, a raid by a group of bandits serves him a harsh reminder that there is more than one kind of danger in the world -- and it is never far away.

Marlene and Dice are reunited with Yuji outside the nomad camp. Marlene pressures Yuji to continue his journey to Second Earth, but Yuji refuses. He decides to remain Elena and her people and to live out the rest of his life in peace. But when Marlene and Dice are attacked by the Blue, Yuji is forced to choose between his life with Elena and saving the lives of his friends.

Marlene and Yuji arrive at Baikonur, only to find the space base in the state of chaos. The facility is crawling with Blue, and the computer defense systems have turned on thier human counterparts. Now, with supplies and personnel dwindling, the assembled recovery teams must launch a desperate bid to regain control of the base.