It's a race against time when a rogue prince (Jake Gyllenhaal) reluctantly teams up with a rival princess (Gemma Arterton) to safeguard a magical dagger that gives its possessor the power to reverse time and rule the world.

"In the near future, a civil servant is offered the salary of her dreams and is, shortly afterward, told what project she'll be working on. A recently established government ministry is gathering "expats" from across history to establish whether time travel is feasible--for the body, but also for the fabric of space-time. She is tasked with working as a "bridge": living with, assisting, and monitoring the expat known as "1847" or Commander Graham...