Dax Shepard doesn’t know martial arts, but he wants to leave comedy behind in order to reinvent himself as an action star. How? By starring, writing, producing, and executive producing Brother’s Justice. This trailer proves that Joaquin Phoenix shouldn’t have tried to trick anyone with a fake documentary, because this honest look at Shepard attempting to get his fake movie made, getting in fights with Brazilian Jujitsu practitioner Bradley Cooper, and trying to get James Cameron on board looks far more entertaining (even if it might be less thought-provoking). If anything, it’s finally gotten Ashton Kutcher and Tom Arnold into the same flick. Check out the trailer for yourself: