The brutal survival ordeal isn't over yet, and the strain of non-stop training is taking its toll on Mutta's health. Struck down by a fever, he has to summon all of his reserves just to keep walking. And that's before the revelation of an unexpected new challenge: the competing teams must create a rover vehicle of their own design in just two weeks! With an assigned consultant who's less than helpful, and who may have a conflict of interest centered around the systems being used for Hibito's return to Earth, Mutta's own experience with engineering may be the deciding factor. And even if they make it past that obstacle, the even more dangerous flight training is about to begin back in Houston! Can Mutta power through the survival and rover competitions in order to take a seat in a T38 jet? It's time to fly like an eagle in SPACE BROTHERS - COLLECTION 5!