Decorated U.S. Army medic and single mother Maggie Swann (Michelle Monaghan) returns home from an extended tour of duty in Afghanistan to discover the bond with her five-year-old son has been broken. As she struggles to reclaim his affection, life after deployment is made more difficult by her persistent memories of Afghanistan. When news of another deployment threatens the fragile balance she has achieved, she must find a way to reconcile her duties as a mother and her obligations as a solider.