Tomorrow, Royce 5’9 will release his anticipated Book Of Ryan album. Now, Nickel Nine and Eminem’s “Caterpillar” music video is made available for the masses. The latest Bad Meets Evil link-up is a fierce reminder that if it is indeed “Detroit vs. Everybody,” the odds are with them.

The song (produced by S1) involves Gil Scott-Heron’s “The Revolution Will Not Be Televised” from the top, as well as Tenor Saw’s “Ring The Alarm.” Em and Nickel’s revolution is televised, as they aim to extinguish MCs who are not thanking Rap’s trailblazers. Royce, he begins: “Ring the alarm, the caterpillar keeps firing, oooh / We in the war, where butterflies keep dying, ahhh.”

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From there, Bad Meets Evil delivers darts against their opponents. “All you ni**as my lil’ rapper babies / Y’all my children, y’all bit my sh*t and contracted rabies / Don’t you grade me next to these rappers, that’s degrading / Plus I got so many different facets / I switch into so many different batches / I’m skipping class to be fascinating,” blasts Royce, ahead of threatening to decapitate your favorite rapper. In a second verse, he contends that most rappers are lying, while he keeps it brutally real. “Remember when you’re praising the butterfly, don’t you ever disrespect the f*ckin’ caterpillar.”

Taking the song’s third verse, Eminem says he is a caterpillar too when he confronts his critics of late: “Don’t tell me when I’m supposed to rap until / Especially when your favorite rapper ain’t even half as iller.” Using gory imagery, Eminem accuses people of copying his style. “You copy me, but you’re not / You can’t be butterflies, my offsprings are just moths / I see that thing, I’ma just squash it and rip the wings off.” Later, Eminem says the line is blurred between “copying” and “paying homage.” The beat breaks as Eminem rhymes off the reels with punchline after punchline, calling rappers his children. He uses jarring images all about bodily functions to bring his point home.

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For those pondering if Royce and Eminem are taking shots at Kendrick Lamar, who made To Pimp A Butterfly, that is not so. “I would never take a shot at Kendrick. I love Kendrick,” Royce tells Ambrosia For Heads this afternoon (May 3). The vet’ clarifies, “The concept of the song is that people should respect those who came before them. I love Redman. I wouldn’t be here without him. You can’t talk about me without giving credit to Redman. It’s the same thing with me and Em. We set the stage for those who came after us, and people should remember that.”

Notably, Eminem also shouts out Slaughterhouse in his verse too, at a time when the crew is said to be disbanded.

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The Book Of Ryan releases tomorrow (May 4). New music from Royce and Eminem is on the official Ambrosia For Heads playlist.