Here is the episode's official plot synopsis from the second episode on Machinima Prime.
"Cadet Michael "Sully" Sullivan continues to decode the hidden ONI combat video as Lasky's struggle with his place in the UNSC ignites with fellow cadet Walter Vickers. After a classroom confrontation with Captain Mehaffey and a challenge from Chyler, Lasky pulls Hastati Squad back from the brink...at a terrible physical cost to himself."
If you do not know by now, "Halo 4: Forward Unto Dawn," will consist of five episodes leading up to the release of the Halo 4 video game. The five web segments will then be collected, along with 15 minutes of additional footage and turned into a 90-minute feature film. This is the second episode to watch the first one click here.
The show's cast includes Australian actor Tom Green as Tom Lasky. Fans of the movie franchise "X-Men" will be glad to know that Colossus, Daniel Cudmore, will be donning the armor as Master Chief. British actress Anna Popplewell, who was last seen battling wolves, beast and witches in "Narnia," also has a role in the new series.
Halo 4 is intended to be the first of a new trilogy of Halo series games, named the "Reclaimer Trilogy," and the first to be developed by 343 Industries. Master Chief will return as the main protagonist, and the AI Cortana returns as well.
Halo development director Frank O'Connor has recently confirmed that the game is done and has been sent to Microsoft for certification. Halo 4 will release worldwide on Nov. 6 with the exclusion of Japan where the game will be released on Nov. 8. Read more about the Halo franchise here and check out the new of Halo 4's launch trailer here.