A young angel without her memory. A legendary prophecy. A dangerous, magical world. Vivian wakes up in a strange forest without her memories and finds refuge with a pair of gnomes. Shortly thereafter, demons chase her from her new home and rumours begin to spread about a chosen one with incredible power. Although Vivian does not know who she is, the Cloud World is certain: She is the chosen one. While fleeing from the most powerful men in the world, she meets the renegade Sato, who seems to know more about her than she does. Will she unravel his intentions before it's too late? The fate of the world and her own fate depend on it...