It came out ~27 years ago. If you are actively reading a thread about old media, I think you have to expect that the audience will be dominated by fans who have already consumed the entire canon of the show.
Don't worry, you can make the argument that the exact opposite things happens vs. what I said. Make sure you're following a watch order than includes the movies instead of just watching straight through the last two episodes.
Honestly - super lame that there was no warning on that. Top comment, too. :( A downvote for you.