ScarJo: My plans were irrelevant

Scarlett Johansson's own ideas were "irrelevant" while shooting Under the Skin.

The actress takes on the role of an alien seductress in the supernatural thriller, in which she preys upon the population of Scotland.

It's a far cry from many of her other parts and the 29-year-old was happy to just go with the flow while filming alongside director Jonathan Glazer.

“I didn’t have any preconceived idea for the role or how to prepare for it,” she admitted to sbs.co.au. “All the pieces were coming together day by day, moment by moment, in Jonathan’s mind as his vision of the story as a whole was taking shape. Any ideas that I had of how to go about playing this character were completely irrelevant and it took us a couple weeks to find our footing.

"In a way, it was about abandoning any judgement as she has no intention, no evil at all. Everything she does is for a purpose and she’s only turned on, so to speak, when she needs to be and then returns to a state of being or observing.”

It's not the first time Scarlett has taken on a supernatural character. The blonde star delights audiences as Natasha Romanoff / Black Widow in the Marvel movies, but she insists Under the Skin is completely different.

“It's not a science-fiction film; it's a film that asks existential questions. Making it and watching it feels like an experience. I don’t think it fits into the thriller or horror genres just as it doesn’t have any specific morality," she explained.

"It doesn’t seem to fit within the confines of all those labels we place on films. Every film is a different type of experience and this certainly was a whole other challenge.”