Punk band the Ain’t Rights — Pat, Sam, Reece, and Tiger — are travelling the Pacific Northwest. After their gig is cancelled, a radio host arranges a new show in a rural area outside Portland through his cousin, Daniel. Arriving at the venue, they realize it’s a neo-Nazi skinhead bar and they’re opening for a NSBM band, Cowcatcher. They go ahead with the show anyway, managing to win over the skinheads. During their set, Pat notes two young women, Emily and Amber, looking disturbed and being shepherded out of sight. Green Room 2016 full
As the band is about to leave, Pat returns to the bar’s green room to retrieve Sam’s cellphone, where he stumbles upon Amber and the members of Cowcatcher standing over the body of Emily, who’s been stabbed to death by Werm. Pat calls the police as he flees, but is caught, and bar employees Gabe and Big Justin capture the rest of the band and confine them in the green room with Amber. Gabe pays one young skinhead to stab another to create a cover story for the police who respond to Pat’s call. He consults with the bar’s owner, skinhead leader Darcy, who decides all witnesses need to be eliminated. He arranges for Cowcatcher to be gifted poisoned heroin, while more skinheads assemble at the bar, waiting until nightfall to kill the band and Amber.
The band overpowers Big Justin and holds him hostage, taking his pistol and a boxcutter from his pocket. They negotiate through the door with Darcy, who asks them to surrender the pistol. Pat agrees, on the condition that they keep the bullets, but when he opens the door, the men attempt to force their way in while slashing at his arm. They manage to close the door, however Pat loses the gun and is seriously injured. Big Justin attempts to break free, leading Reece to choke him unconscious. In response, Amber slashes his stomach open with the boxcutter.