Continuing the hunt for his sister, Sara, Setsuna leaves Hades to search for her in Heaven. Unknown to him, Kurai and Kira are trying to revive his lifeless body. Their efforts pay off in an unexpected way-Setsuna awakens to find himself in the body of the angel Alexiel!

In Heaven, Sevortharte, who until recently had ruled in God's absence, is forced to publicly declare his loyalty to the mad angel Rosiel, Heaven's new ruler.

Now in Heaven, Setsuna wants his body back. His only choice is to ask for help from Raphael, the reluctant physician-angel, or the demon Lucifer...