Thin plot and Winona Ryder plays Spock's mother (oh, snap! She must feel old)
The SFX and action is so good you will not care there is almost no plot. Some of the older crowd will miss the ample drama and plot line of the earlier Star Trek movies which balanced the drama against the eye candy. This show is all about effects.
Acting is generally good but Karl Urban lays McCoy on so thick, you'll need dilithium crystals to cut through it. It was wonderful to see Leonard Nimoy up on the big screen again.