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Jennifer Hudson Gets Raw in "The Inevitable Defeat of Mister & Pete"

Steve Granitz/WireImage(LOS ANGELES) -- Jennifer Hudson takes on a new character onscreen as Gloria, a drug-addicted mother, in The Inevitable Defeat of Mister and Pete, out Friday. The American Idol alum, who was raised in a Christian household and has never even drunk alcohol let alone experiment with drugs, told ABC News Radio the character was a real departure for her.

"Gloria and I are like complete opposites in every way imaginable, with the tattoos, with the diction," she explains. "And I'm like, 'Oh my God.  I'm in trouble. What am I gonna...draw from?' And so, I was like, well if I don't have anything within me, I need to find someone that I can draw from and tell their story. So that's what I tried to do."

Hudson says she went to a rehabilitation center to sit face to face with women who dealt with the addiction problem she tried to portray on the big screen.

The Inevitable Defeat of Mister and Pete plays out after Hudson's Gloria is arrested for dealing drugs, leaving her son Mister and another abandoned boy Pete, to fend for themselves during a New York City summer. With no money, air conditioning or adult supervision, the boys discover the importance of friendship and community.

As a mother raising 4-year-old David Jr., who Hudson had with fiance David Otunga in 2009, Hudson found Gloria even harder to tap into because her son was right there on set. "It was difficult for him because he would see me rehearsing and preparing for the role and he'd be like, 'What's wrong with my mommy? Why are you acting like that because that's not how my mommy is?'" she says of her son's reaction to her playing a heroin addict.

It was also a hard part for Hudson to play because the Academy Award-winning actress felt her maternal instinct kick in when she played opposite Skylan Brooks, the 14-year-old actor who portrays Mister. "Especially the scene when I had to smack him because I'm like, 'It's a child!" she admits.

Still, the titular characters, who also include Ethan Dizon as Pete, were complete professionals.  "It was amazing because they set the tone from beginning to end," she says. "They were there every single day and for the rest of us we just stepped in and did our parts to support their roles."

Fellow American Idol alum Jordin Sparks was also on set, though not at the same time as Hudson. "I didn't learn that she was in the film until I started filming," the 32-year-old admits. "I'm a fan of Jordin. And it's good to see her get into acting. She did an amazing job as well so I was proud to see her be a part of the project too."

Anthony Mackie and Jeffrey Wright also star in The Inevitable Defeat of Mister and Pete, out in limited release Friday.

Copyright 2013 ABC News Radio

ABC News Radio