Just think of the Sylo series by D.J. MacHale meets The Lunar Chronicles by Marissa Meyer and this may be the sort of concoction they'd make. The world has been invaded by aliens. It started with a Mother Ship just there with everyone hesitant to contact it, then came a huge blackout where there was no power, then there were huge sky attacks, and then the plague that wipes out the population to the point where there's probably about one per city and town in the world, and the aliens have been shown to impersonate humans. Four waves total. Now what will The 5th Wave be? Bottom line, the other humans are getting trained for battle in a place called Camp Haven and a survivor named Cassie, Cassiopeia her real name, has to try to find and bring back the last member of her family.
Now, to me, how long or short the chapters are in a book sometimes deeply affect how much I enjoyed myself. Sometimes they're too long that I'm reluctant about reading some, and other times they're too short and I really feel this book is taking its time as I count down. But that all dates back to if I enjoyed the book or not, and The 5th Wave was...fine. Despite its short chapters and the fact I wanted it to be over for huge parts of it, it was fine. The first few chapters, it was quite reminiscent of Sylo but seemed more in a hurry to start the survival story. It was still mysterious enough though to keep me interested in what the fifth wave was going to be. However, kind of like the first Shatter Me and Tiger's Curse, it sometimes seems like an overlong startup. I felt remorse for Cassie and Sammy but I've gotten more emotional over dozens of different novels in my day. The unmemorable characters, apart from Cassie, I'm afraid make the story kind of boring.
It takes the entire book to begin feeling remorse for characters that takes the entire book to know are important, and during that time, for all its seriousness and grieving dialogue, it is quite silly. The book I don't think has a big sense of time; there's a section of the book which involves camp and preparing for battle, and the prosecution is so long and doesn't seem realistic for a big alien invasion. Time doesn't seem as much of the essence as I think it should.
The book still has some funny moments of dialogue, and I found the relationship between Cassie and Evan very arduous and the final little boss battle was worthwhile. Sadly, I just think The 5th Wave is too plain to really appreciate as much as Rick Yancey might want. I think The Infinite Sea might be better, mostly because I saw it and it's much shorter.