Not much. I think you were there for our 'hero' attacking the captain and trying to open fire on the Klingons, so all you missed is the captain walking onto the bridge, having the XO thrown in the brig for mutiny and the respective fleets show up. The previews for next episode strongly hint the XO survives what comes next only because of the brig forcefields.

The science officer is a nice look at an evolved prey animal (most everything we see are predators). The language is clunky, of course--he should be talking about knowing when he's being hunted, not mumbling about death coming.

The biggest strike against the captain is that she thinks the XO is ready for promotion.