Transcript for 'Miley: The Movement': Why the Singer Pushes the Envelope
It is. We're going to the "heat index." Miley cyrus coming up. She's in the hot seat since the vma performance caused all that controversy. Now, answering her critics in a document called "miley the movie." Reporter: Let's face it, as an entertainer, you know you're pushing the adolescent to almost adult envelope, when even britney spears sounds shocked. You're not going to be topless on stage. Reporter: No. The tongue-wagging 20-year-old, who is eager for pop edginess, her child stardom, seems so 30 seconds ago. It's part of the movement. We have to be like an army moving at one time. Reporter: With behind-the-scenes slices of promoting her new music. Fighting frustration. I don't want to sing anymore right now. Reporter: Once for her supersized voice. Her rooftop on "gma." And a montage of moments leading up to her foam rubber finger TWERKFEST AT AUGUST'S VMAs. Including a full-on miley feltdown. All done in the fervent hope that her music will clean up. She is very clear-cut about what she wants. She doesn't mince words. She knows what she's going for. And she's getting people to talk about her. ♪ Wrecking ball ♪ Reporter: Also talking about her, an unapologetic tish cyrus. Has the good and there's bad. And they're right there. Reporter: All of it designed to reinforce the notion of what some might see as wild behavior, is part of miley's master plan for world domination. I think if people could see the details, they would know this isn't just some mess. It's all thought out in my mind. Reporter: For "good morning america," chris connelly, abc news, los angeles. That airs on mtv this sunday.
This transcript has been automatically generated and may not be 100% accurate.