Christine Stewart is a regular woman just doing her job when she gets stranded in history. When she gets up for the day, her plan is simple: go to work, travel back in time to the year 1867 in Oklahoma to deport a cyber-criminal, then head back to her time in 2070 Los Angeles and get ready to go on vacation with her son, Michael.

Then the system goes down and she—and dozens of other transporters around the world—are stranded in the past with minimal training and no supplies.

Just when she thinks things can’t get any more dangerous, she is cast further back in time and thousands of miles away.

As her goals shift from simply getting home to something much more dire to all of humanity, Christine must step outside of herself, work as part of a team, and ultimately make the choice between what it easy and what is right. Even if it costs her everything—including her one chance of ever getting home.