Kristen Stewart is in awe of free spirits.

The actress stars in On the Road alongside Garrett Hedlund and Sam Riley.

The independent drama based on beat generation author Jack Kerouac's classic novel is a semi-autobiographical story.

The plot follows Sal Paradise, portrayed by Sam Riley, on a journey across America with his best friend Dean and his friend's wife Marylou.

Sam, Garrett and Kristen's characters perform a threesome in the film.

Kristen is amazed by Marylou's joie de vivre.

"[Marylou] lets everything happen without any awareness whatsoever because she's truly, truly doing it and enjoying it," she told Extra.

Kristen thought Kerouac's original On the Road tome was very powerful.

She could relate to the deep personal relationships explored in the work.

"I read this book and I was like, God, I've got to find people like this in my life. I need people to push me,' " she shared.