Alright imma try! I’m going to explain it scene by scene
The animatic is about Adam’s life, including what’s implied outside of what we saw on-screen, and also about everything that happens in canon

The intro: Alastor is putting his radio somewhere in the hotel (it’s the same radio that the one he uses in the song “Stayed Gone”), and the hotel’s residents listen to it’s music
Note: there was a full 35 seconds before the lyrics starts and i wanted to adapt the full song, also I thought of it as an occassion to draw the full main cast at least once in the entire animatic

Eden: Adam bites the apple after Lucifer convinced Eve to bite it
Note: I imagine Adam and Lucifer were friends back in Eden

Even more notes: the first time I drew the apple, I accidentally drew it too realistically, to the point it looked too uncanny compared the the characters’ designs, cartoon characters holding a much-too-realistic apple aah, so i redrew it, here’s the OG apple:

Charlie and Adam’s meeting: Adam mocks Charlie’s idea and dream
Note: the lyrics fit pretty well to the canon scene! so that was cool!

Charlie and the triel in Heaven: Charlie and Vaggie arrive in Heaven, Adam mocks them once more and accidentally reveal the existence of the extermination to the other angels
Note: the lyrics fit pretty well to the canon scene here too!

Adam and Sera scene: Adam just died and arrived in Heaven for the first time, Sera realizes he died and comfort him
Note: i pretty much made this whole animatic just for this scene to happen AUHUIEJGRHEIKJUHGKJIUG (it looked better in my head tho, but ah oh well XD)

Adam and the exorcists attack the Hazbin Hotel: Depiction of Adam’s fight against Alastor, then his confrontation with Charlie, then his reunion with Lucifer for the first time since Eden!
Note: since the lyric “the moon” happens at the same time Lucifer appears in the animatic at multiple times, i saw some theories about what it could mean in the comments, and i like them so imma keep it unclear here

Adam dies: well, uh, Adam dies
Note: the parallel is not nearly as obvious as i wish it could have been, but Adam’s expression in the very first frame where he appears (in Eden), and the very last frame where we properly see his face (where he’s dying) are the same!!
parallels between beginnings and endings go brrrrrrrrrrrrrrrr
I wanted the first frame and the last frame to be almost exactly the same (but yknow, one is in the past and the other he’s in the present) (he’s smiling but the situations are WILDLY different)
this ended up not being the last last frame, but i’m still satisfied with it, tho i think the parallel became too subtle tho aiuhneigruuiyoiulp

Even more notes: As to why there’s a curtain closing at the end, the last episode is called “The show must go on”, but it definitely isn’t continuing for Adam. The show is over for him, and the curtains can close…

Adam and Lucifer laughing: Adam and Lucifer are laughing, they’re in Eden and also surrounded by ducklings
Note: based on the comments I received, people got much more emotional about these last frames that i expected! That’s great! Definitely unexpected tho XD It plays on the headcanon that Adam and Lucifer used to be friends back in Eden, and i thought making a call-back to his past in Eden would make a nice ending

Bonus funfact!
I thought it was going to take 2 weeks to draw
It did not, in fact, took 2 weeks to draw
(It took 2 months)