Marina is a normal girl, just like any other, except for a few things. She's a princess from 1357, the favored daughter to King Edward III and Queen Philippa of England and the betrothed to the arrogant Prince Alexander of Scotland. Although when a massive storm strikes London, Marina's curiosity of the sea leads her to a mistaken rescue by some FBI agents from 2012 whose mission is to destroy the plagued demon they call Shadow Offenders. She soon learns that she can change the world, make her own choices, and still find her very own true love.