The Enterprise encounters the Suliban whilst hosting some religious pilgrims on their way to witness a major space phenomenon.
This is a strong episode that appears to have kicked off a story arc surrounding the Temporal Cold War. Time travel is overused in Star Trek (and Sci-Fi in general) but this concept is excellent. After witnessing The Borg, The Dominion and various other antagonists within the franchise you do wonder what other credible threat the writers could conjure. The creation of a war involving time travel as an emerging technology was a top drawer idea.
It's all done rather well in terms of plot, pacing and character moments. Archer is at the centre of it all with some good support from Dr Phlox and T'Pol who's personalities come through in a number of scenes. Scott Bakula took a panning from several reviewers for his performance here, but I didn't think it was that bad. I just think of him as a Jim Kirk inspired Sam Beckett in space and it all works fine for me.
The only character I have really struggled with so far is Travis and in this one he is presented as a man-child that would make Tom Paris cringe. It probably doesn't help that Anthony Montgomery's performances have been quite unconvincing and he hasn't had much decent dialogue to work with.
I definitely won't be giving up on Enterprise yet as this particular arc has hooked me. Let's hope it lives up to the promise.