The Tearmoon Empire is ravaged by revolution; its imperial family deposed, imprisoned, and executed. After years of squalid imprisonment, Princess Mia meets her fate at the guillotine. She reawakens in her twelve-year-old body with a mysterious journal.

Seeking desperately to avoid a gruesome fate, Mia begins seeking allies to help her alleviate the problems that tear the empire apart in the future. To do so, she seeks out a dour four-eyed nerd mentioned in the mysterious journal.