The Unraveling (2015)

Michael is a basically decent guy with a pregnant girlfriend, great friends - and one massive drug problem. Because he missed his own Las Vegas bachelor party being too stoned, his four besties decide to kidnap him for a weekend of roughing it in the California wilderness. Caught off guard by this surprise camping trip and his nose candy supply dwindling, Michael is shocked when his buddies start being ritually murdered one by one. Suspecting it’s the vicious drug dealer he cheated getting bloody revenge, Michael’s life swirls out of all control as the real truth is revealed.