This movie is going to be ridiculous. And I mean that as a compliment.

Principal photography recently began on San Andreas director Brad Peyton’s Rampage, which is indeed an adaptation of the 1986 arcade game from Bally Midway. The game centered on a giant gorilla, alligator and wolf wreaking havoc on major cities across the United States, and we’re happy to report that the film actually won’t be deviating from that whacky plot very much.

The folks over on Splash Report just got their hands on the movie’s plot rundown:

The first privately owned space station is destroyed by a mysterious experiment done onboard. Three canisters crash land on Earth. One lands in the gorilla enclosure at the San Diego Zoo, the other in the plains of Wyoming and the last one in the Florida Everglades. The Griffin Technologies Group, headed by two siblings (Malin Akerman and Jake Lacy), tries to destroy any evidence of wrongdoing before the government finds out. It’s too late because the canisters have infected a gorilla named George, a wolf in Wyoming and an alligator. They start evolving and growing exponentially. To cover their tracks, the Griffin idiots decided to unleash a beacon that will make all three large animals head toward one destination: their head office located in the Willis Tower in Chicago.

Dwayne “The Rock” Johnson plays “an ex-marine who’s now a primatologist that raised George at the San Diego Zoo. He taught the ape sign language, and they share a special bond.”

Ryan Engle wrote the original draft of the adaptation, and Adam Sztykiel most recently came in to do some revisions. Carlton Cuse and Ryan Condal also worked on the script.

The ensemble cast also includes Naomie Harris (28 Days Later), Jeffrey Dean Morgan (“The Walking Dead”), Malin Akerman (The Final Girls), as well as Joe Manganiello (“True Blood”), Jake Lacy (“Girls”), Marley Shelton (Planet Terror), PJ Byrne (Final Destination 5), Jack Quaid (Tragedy Girls), Matt Gerald (Bright) and Breanne Hill (San Andreas).

Get ready to Rampage on April 20, 2018.