Spensa's world has been under attack for decades. Now pilots are the heroes of what's left of the human race, and becoming one has always been Spensa's dream. Since she was a little girl, she has imagined soaring skyward and proving her bravery. But...
The world changed after deciphering a mysterious signal from the universe. The era of space travels starts. The two Brothers, who are the embodiment of authority in the country, meet a crew which has just returned from the travel. But they returned...