Consider this a bridge between the two generations in the comics-verse...
You've got the OG/(classic) Firefly with Mal, Book, and everyone else. Then, jump 20 years into the future and you have the 'Brand New 'Verse' with Captain Emma (Zoe/Wash's daughter) leading the ship.
The only thread connecting the two is the AI from the first story.
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This could have used a little explanation or back story. Without it, people are just left floating out there. Hard to connect to a story when you can only really connect to an object (The Serenity). Also, the art doesn't do anybody any favors in the second story. You'd never know it was Zoe backing up her daughter if they didn't tell you. Pretty jarring when your characters don't look anything like their likeness IRL.