When a punk band witnesses a murder at a remote skinhead bar, they become trapped backstage and must fight for survival against a violent neo-Nazi gang. Green Room is a brutal siege thriller that blends claustrophobic tension, graphic violence, and raw punk energy into one of the most intense modern thrillers.

A struggling punk rock band is forced to fight for survival after witnessing a brutal murder at a neo-Nazi bar. Trapped in the green room, the group must use everything at their disposal if they wish to make it through the night.

Från IMDB:
A punk rock band is forced to fight for survival after witnessing a murder at a neo-Nazi skinhead bar.