Mission: Impossible

Tom Cruise Initiates 'Mission: Impossible' Ice Bucket Challenge Protocol

It's like 'Ghost Protocol,' but with more ice.

There isn't a whole lot that Tom Cruise isn't willing to try. He made that point terrifyingly clear by scaling the world's tallest building, Dubai's Burj Khalifa, for a climactic sequence in "Mission: Impossible - Ghost Protocol." Now, on the set of "Mission: Impossible 5," Cruise is ready to accept another challenge — and this time, it's sending shivers down his spine.

Not because the challenge is terrifying, mind you, but because it's ice-cold. Cruise, alongside new "Mission: Impossible" director (and Cruise's "Jack Reacher" collaborator) Christopher McQuarrie, accepted the ALS Ice Bucket Challenge on behalf of the entire "Mission: Impossible" cast and crew, just days ahead of the official start of filming.

But even though he's about to return to his role as IMF agent Ethan Hunt, Cruise's Ice Bucket Challenge video has a little bit more in common with his live-die-repeat performance in "Edge of Tomorrow." Watch the video for yourself, and you'll see what I mean:

Cruise and McQuarrie's "Mission: Impossible" sequel hits theaters on December 25, 2015.