Dailies | Zac Efron and Bear Grylls Tear Shirts Off and Rappel Down a Waterfall Together (Video)

Zac Efron and Bear Grylls Tear Shirts Off and Rappel Down a Waterfall Together (Video)

The “Neighbors” antagonist joins the survivalist in the NBC series premiere of “Running Wild With Bear Grylls”

Zac Efron is “Running Wild With Bear Grylls,” which apparently doesn't require shirts.

The “Neighbors” star joined Grylls for his new NBC show, and apparently requested the survivalist's “biggest, baddest adventure,” according to People magazine.

Efron got something pretty big: a really high cliff in the Catskills Mountains, complete with a waterfall that the two had to rappel down.

“I can't believe how high this is,” Efron says in the below clip.

See video: Zac Efron Proves He's Still Got the Moves by Dancing to Jason Derulo's ‘Wiggle’

To make sure they committed to their goal, Grylls tosses their backpacks in the river way below. The video stops while they're still pretty high up, but we're willing to bet that they probably made it.

Ben Stiller, Channing Tatum and NFL Hall of Famer Deion Sanders will join Grylls later in the season.

The series premiere with Efron airs on Monday at 8 p.m. ET.

Watch the video: