You've seen The Rock channel a teenage nerd. Now enjoy Danny DeVito inside his muscular body.

Welcome back to the deadly Jumanji game, but this is a whole new thing.

The official trailer dropped Monday for "Jumanji: The Next Level," and the already strange video-game world is now completely upside down.

In the follow-up to the 2017 hit "Jumanji: Welcome to the Jungle," where four high schoolers were transported into a deadly gaming landscape, Dwayne Johnson's manly avatar, 6-foot-5 Dr. Smolder Bravestone, is now inhabited by 4-foot-10 DeVito.

DeVito plays the grandfather to Spencer (Alex Wolff), who has somehow entered the dangerous game in Smolder Bravestone's body alongside his friend, Milo Walker (Danny Glover).

Except that Milo is now in the body of Kevin Hart's Franklin "Mouse" Finbar.

Jack Black's Professor Sheldon Oberon has become the avatar for Fridge (Ser’Darius Blain) - who previously found himself in Finbar - in the new round. Martha, as Karen Gillian's Ruby Roundhouse, is the only character to make the jump into the video game as before.

Dwayne Johnson has sizzle power:'God delivered, I signed for it'

Same deadly game. Even more challenging, with whole new personalities. At least DeVito's hips feel pretty great inside The Rock's body.

Nick Jonas, as Jefferson "Seaplane" McDonough, returns along with Awkwafina in the follow-up directed by Jake Kasdan.

All will be revealed when "Jumanji: The Next Level" hits theaters Dec. 13.