Fantastic? Four
The Good
Garney's art, although not as impressive as 605. Another good point is that not knowing key plot points at the start kept you reading until the end.
The Bad
For me the best thing about the issue is you start off knowing nothing then you gradually get an extra piece of the story each page, but unfortunately the payoff felt lack-luster and underwhelming. I have read all of Hickman’s run so far but I have no clue who the guy whose body they are inside is. A lot of the panels seemed extra large to make the story end quicker. It's like Hickman just wants to get this issue out of the way to fill a gap at the end of his run, or to get it out of the way for the black panther story next issue. Also finally I found it stupid when Reed controlled that white blood cell, it just seemed like a cop out.
Verdict
I love Hickman but this story was a 3/5 at best. Wolverine and the x-men did a similar story to this and Jason Aaron did it much better. However I am looking forward to next issues black panther story and when Ryan Stegman starts drawing Fantastic Four.