Brie Larson and Tom Hiddleston are taking on the biggest Kong ever in Kong: Skull Island, and only ET can take you to the set!

Set in 1973, the action movie follows a team of explorers and soldiers who mistakenly stumble into the domain of the mythic Kong while traveling to an uncharted island in the Pacific.

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"It's huge and we're talking about one of the greatest myths of all time," Larson says in a behind-the-scenes clip. "I couldn't resist."

Unlike past King Kong movies, the 27-year-old Oscar winner doesn't play the typical damsel in distress, but instead is a photographer on a mission, trudging through an untamed wilderness.

In fact, the movie's filming locations in Australia, Hawaii, and Vietnam were so off the beaten path that Larson and her stylist had to improvise her red-carpet looks during last year's awards season.

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"I'm spending my days running around in the jungle with no phone signal, so I don't have the time," Larson told ET's Nancy O'Dell at the Screen Actors Guild Awards. "I have no service to try and find a dress."

But the difficult conditions were worth it and definitely helped in bringing the story to life.

"It will be the most thrilling action," Hiddleston promises. "It will feel very rugged and raw and exciting."

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Kong: Skull Island opens March 10.