Okay, so just like in the first book, there are going to be time jumps. I thought that was an interesting component in the first book and I would like to bring that back.

For the Heroes of Olympus, it takes place during the Magnus Chase/Trials of Apollo areas in Rick's timeline.

For Miraculous Ladybug, it takes place after Season 1 and the Christmas special.

For Danny Phantom, it takes after Phantom Planet, so Danny and Sam are going to be together and Tucker is the weird, awkward, third wheel who wants to have a girlfriend, just like in the episodes (for the record, I don't think that Tucker is a third wheel, he just seems like he would be like that for Sam and Danny's relationship) Also, Butch Hartman revealed that if Danny Phantom had a fourth season, the Fenton's would've adopted Dani Phantom, Danny's female clone. She will be in this story as Danny's twin sister since they technically, and literally, share the same blood.

For Michael Vey, it takes place after the 6th book, Fall of Hades, where Michael "dies" sacrificing himself for the Electroclan. The reason "dies" is in quotation marks is because Richard Paul Evans said that this was going to be a seven book series, and it makes no sense to kill the main character, who the book series is named after, before the main book. The Divergent series, I get. Veronica Roth killed off Tris in the last 40, maybe 20 pages of the last book. I get that. But it doesn't make sense to kill off Michael. So, I'm going with that, and this is just a theory, but somehow, because two of Dr. Hatch's remaining Glows (basically the other three out of five joined the Electroclan, which are Tara, Quinten, and Torstyn) aren't very powerful so he figured out how to capture Michael's energy and get him into a stable body, but with no memories so he can join Hatch's Glows. At least, that's my theory, so that way, in the last book, he's still there and Taylor can save him. So yes, Michael will be in this book.

That's pretty much it. It may be six, maybe seven chapters, before you get information about the future in the book. Just a warning.