The 29-year-old actor stars as a Marine coping with post-traumatic stress while searching for his wife and son in the Dito Montiel-directed post-apocalyptic war film and said it was like "a healing process", reported Entertainment Weekly.
"He (Montiel) came to my house when I was in a really low place and offered it to me like therapy, like, 'Here's a healing process so we can jump into together and get well," LaBeouf said.
"Man Down" reunites LaBeouf and Montiel, who last worked together on 2006's "A Guide to Recognising Your Saints" and the actor said he does his best work when he is surrounded by people who love and support him.