"Guardians of the Galaxy" director James Gunn took to Twitter to share a brief teaser for his upcoming horror thriller "The Belko Experiment." The full trailer will arrive on Wednesday.

Written and produced by Gunn, and directed by "Wolf Creek's" Greg McLean, "The Belko Experiment" centers on employees of the Belko Corporation. At the beginning of the work day, they're locked into the office building and ordered by a mysterious voiceover to kill one another or be killed themselves.

The full #BelkoExperiment trailer coming in a few days… but for now here’s a little taste. pic.twitter.com/SxkPIBXUOd

— James Gunn (@JamesGunn) November 27, 2016

The Belko Experiment explores a twisted social experiment, in which a group of 80 Americans are locked in their high-rise corporate office in Bogata and ordered by an unknown voice on an intercom system to participate in a deadly game of kill or be killed.

As you can see from the teaser, the film reunites Gunn with frequent collaborator Michael Rooker ("Slither," "Super," "Guardians of the Galaxy"), as well as his brother Sean Gunn. Opening in March, "The Belko Experiment" also stars John Gallagher Jr., Melonie Diaz, John C. McGinley, Tony Goldwyn, David Dastmalchian, Gail Bean, Valentine Miele, Mikaela Hoover), Josh Brener, Rusty Schwimmer, Joe Fria, James Earl, Brent Sexton, Stephen Blackehart, David Del Rio and Ben Davis.

(via ComingSoon)