A week before he's to be married, Tony plans to spend one last weekend with Mack, the single father who raised him more like a brother. When Tony's pregnant teenage mother was a victim of a high school shooting, the then-16 year-old Mack devoted his life to his son. 

 

But their off-road camping trip becomes a terrifying nightmare: a sudden storm, an overturned jeep, Tony pinned in a rising river bed.

 

What's a father to do, in the middle of nowhere, without cell phone service?

 

Mack has to run for help in a race against time.  Finding Lucas, who also is on the run, Mack goes against his own morals in order to force this bitter young man into saving the life of a stranger.