Ex-Marine and hardened Arizona rancher Jim Hanson simply wants to be left alone as he tries to make a living on an isolated stretch of borderland. But everything changes when he witnesses 11-year-old migrant Miguel and his mother fleeing from a band of assassins sent by a ruthless drug cartel. After being caught in a shootout, Miguel's mother begs Jim to take her son to the safety of their family in Chicago. Defying law enforcement, Jim and Miguel hit the road and slowly begin to forge an unlikely friendship while the cartel's relentless assassins blaze a bloody trail, hot on their heels.