Misuzu is trying to understand the stories she has always heard from her people about a winged princess, and on her journey she encounters Yukito, a traveling performer who is searching for his own version of the woman with wings.
Follows the worldwide escapades of young arms dealer Koko Hekmatyar and her team of bodyguards composed of ex-military veterans and Jonah, a seemingly emotionless child soldier who is skilled in combat yet ironically hates arms dealers.