The key to this part is run, run, run! (I've heard that it's not necessary--you could walk--but why? I guess to make the NPCs wait. I got caught up in the urgency of the matter, so running seemed like the logical choice.) And maybe be sad about all the named NPCs that survived until now that litter the path as you head to the boat. Yeah, there are maybe two of them that survived and they become your followers. That's pretty grim. More voice acting! Worth noting - Exarch Maladaar can apparently summon two [npc=81244] spirits, a male and a female. This may or may not be the only time he uses that, so I submitted a screenshot.
Thaelin Darkanvil says: That danged army should be here any minute. Let's move!
Archmage Khadgar yells: The docks. Run to the docks. Run. RUN!
Ga'nar yells: Come at me, Hellscream!
Farseer Drek'Thar says: Don't be a fool, Ga'nar - Run! We will fight another day.
Yrel yells: Look out!
Yrel says: Keep moving. I see the ships ahead.
Exarch Maladaar says: Where now?
Vindicator Maraad says: Head for the ships at the end of the road.
Arhcmage Khadgar yells: This way. Go, go, go!
Grommash Hellscream yells: There is no place to run, outsiders. This is MY world. We will find you!
Vindicator Maraad says: Ignore his threats. We will got to Shadowmoon for reinforcements. This time, the draenei will triumph.
In summation, this is the NPC's chance to look awesome for a group photo. Say "cheese"! =)
Next quest - Step Three: Prophet!.