I don't really know how to write this one as I am not really one of those who report on books.
Just wanna say to y'all who didn't read the book you should really go get it. It tells the story of a very dark world, where each uniqueness of our world is exaggerated and shaded, where all is inspected, monitored and controlled by a central authority. a centralized world, where nothing is beautiful but one thing - the common truth. How does living in a world like this feels? How far fetched is this world from ours? What is the nature of truth, and freedom?
These are my thoughts. hope that's working for you.
Not sure if I'd call it plagiarizing, but he did heavily borrow from "We" by yevgeny zamyatin. Which he actually wrote a review of not long before starting with 1984. This Wikipedia section is an interesting read.
Definitely worth reading both and compare what Orwell copied and which original ideas he added.