When Alex Solomon is placed in the witness protection program, U.S. Marshal John Chase is assigned to guard her. Feeling neglected and disillusioned, John's wife has an affair that leads to the end of their ten-year marriage, and subsequently pushes John and Alex together. As the triangle becomes more complicated, dangerous drug lord Xavier Rivera closes in on his target. A mole in John's department has revealed Alex's location, and as John races to figure out the culprit, no one is safe, not even his own kids.