It wasn't even remotely close to the worst episode last season. If I'm being honest, it was actually pretty fun... but it's probably for the best that I didn't mention the episode where Clifford Main from Better Call Saul tries to kill Sarah Silverman in 1996... So I'll mention it now!
It wanted so badly to be Star Trek IV: The Voyage Home.

I guess it partially succeeded, because I'm comparing the two semi-favorably right now. Haha.
Trek (Before JJ Trek at least) actually has a pretty good track record for time travel episodes.