A group of telepathic historians come aboard and Troi, Riker and Bev fall into mysterious comas. It’s up to Data and Geordi to figure out what is going on.

You should probably know ahead of time that this episode is about Deanna getting physically assaulted in her mind because Jeri Taylor wanted to do a rape episode for some reason.

I summarize the plot and point out and explain all the references so you don’t have to