After Black Mesa plummeted into the ground 200 years after the incident, it was brought back to life by a group of Blue-Headed men all named "Jamie". Jamie and all his friends now work at the lab, and ironically enough the same exact thing that happened 200 years ago happens again. Even with Gordon Freeman brought back from the dead.
Have a good snooze! Or something.
This mod is fantastic; however, there were a couple of level transition bugs. Getting to the next level after half-way through We've Got Hostiles requires a complex manouever or you will end up OoB, and (this might be a problem with Xash3D) the ending crashes the game with a landmark error. I loaded the map through the console and was glad to see that it had been edited in a similar fashion to the rest of the mod. I was disappointed that the copy of ba_tram1 wasn't actually used or even modified in the game. Still, these quirks define the game so 10/10.