Theatre of the Dead (2013)

Locked away in their theatre, the cast and crew of "Angels In Hell" spend seemingly endless hours in rehearsal, unaware of the rapid and shocking changes taking place in the world outside. Now, trapped in the theatre by a horde of the living dead, with limited resources, they must decide between staying put and hoping for rescue, or taking matters into their own hands and making an extremely risky break for it. As debate over the course of action splits the group, and the spreading zombie virus starts to reduce their numbers, they are unaware that the greatest danger to their lives dwells within their ranks.