As a fully-fledged agent of the Federal Bureau of Temporal Investigation, seventeen-year-old Lieutenant Nonie Thorburn's job is to keep the timeline intact. While that sounds like a noble cause, it is incredibly difficult to pull off while stranded in the past without any means to track down the madman out to kill one of the most important historical figures of the last century, Captain Kieran Wildason-who also happens to be the man Nonie is in love with.