If you could change history, would you?

College graduate Josephine "Josie" Jackson answers 'yes' to the question on a survey while visiting the Old West tourist town of Tombstone. The next morning, she wakes up in Indian Territory in the 1840s, where she's given a mission to complete before she can return to her time: to reset history, and prevent the deaths of hundreds of thousands over the next century, by convincing the man responsible for kindling the war between settlers and natives to stay home on the day he's supposed to start the war.

But someone is hunting down time...

The past is waiting.

Josie Jackson has been thrown back to the era of the Mongol Empire by Carter, the mastermind behind her trip to the Old West. Soon after arriving, she's discovered by Carter's enemies. They sever her connection to her handler, leaving her no choice but to obey them - or risk never making it home.

She completes the mission they assign her, only to have her hope of seeing her family and time again crushed. Her new handlers have stranded her in the past - alone, friendless and with no empathic memory chip to help her navigate the dangerous politics of an...