Anya is right, you don’t need everything. You can also do an episodic approach to build the world further. Imagine my previous post’s idea for Alien Dragons as a TV series.
Pilot- Nikki & Jade journey to Earth. Each starts furthering their agenda. They don’t learn of each other just yet, but they do get into the world somehow. Jade meets Crow and takes over her gang. Nikki meets Liz (the security guard) and becomes her roommate. She also gets a job as a reporter and meets her other human friends.
Episode 2- Nikki transforms into a dragon to save Liz from Jade’s thugs after she challenges their criminal activity. Liz is shocked, but agrees to keep Nikki’s secret. But not before Glory Hound Gary- Liz’s boyfriend- swipes Liz’s cell phone video of the transformation (Uh Oh). Thankfully Hippie Baxter finds and erases the video before Gary can do anything stupid with it. Nikki doesn’t know Baxter knows her secret or that he has gambling problems. Jade meanwhile meets with the Kingpin and gains an alliance. Marc the Detective is investigating Jade after he orchestrates a criminal campaign.
As the season continues, we get various other episodes that establish important developments (character intros, Nikki and Gary get into an argument, Nikki becomes friends with Baxter, Jade continues his evil activity, Nikki fights him and keeps losing, Jade learns about Nikki, etc), days in the limelight for certain characters (Jade’s bomb-maker and other minions, Marc, Liz, Crystal, etc), crossovers (Spider-Man meets Nikki and they fight the Green Goblin, etc), zany fun (everyone visits a casino or the beach, etc), and so forth. This builds to…
The Season 1 Finale. Jade calls in his heavy hitters and attacks the city. Nikki needs to transform to stop him. She’s fought Jade before, but lost every time before someone else saved her and scared Jade off. She still isn’t sure she can beat Jade. Transforming her may also expose her- what happens if Marc, her boss, Gary, etc find out her secret? Baxter may have agreed to keep it by now, or maybe he has told his bookie he might have a way to settle the debts since the bookie’s a social media mogul. There’s also the recurring side plot of Jasyn Wynter, Liz’s mysterious employer who also owns Nikki’s media company and keeps a lot of bodyguards for some unknown reason (he’s possessed by a Demon he can’t always completely control). At the climax, both Nikki and Jasyn transform into Dragon and Demon to defeat Jade and his forces. They then look at each other… will they fight now? Cliffhanger for Season 2!
Each episode’s plot can be addressed as stand alone and explore a different nuance of the world. You can further build your world as the story continues. Each episode has various character and plot arcs. Some may and should span multiple episodes. Develop things, have fun, and hopefully you and your readers enjoy!