In the first years following the turn of the 20th century, much more is happening than what is in the conventional world. In the small archipelago in the North Sea known as Shetland, a gate exists that connects this world to another known as the Infinity Sea, the endless body of water sprinkled with small islands. However, after a long series of events, this world met an era of turmoil, after Flynn Russel stole the Phoenix Stone from Firuzeh, the former Persian Emperor of the realm. This Phoenix Stone gives the beholder complete power over the Infinity Sea. Nevertheless, the Phoenix Stone was eventually lost, and its location was forgotten even to Flynn himself. Now, a young girl living in the Port of London has a dying motive to discover this legend, which brings her into meeting the intrepid Flynn Russel. In doing this she finds herself in the middle of the effects of the Infinity Sea's long backstory, and also discovers her own true backstory in relation to this mystical place.