Halo 4 Forward Unto Dawn

Cast

Tom Green as cadet Thomas Lasky

Anna Popplewell as Cadet Chyler Silva

Enisha Brewster as Cadet April Orenski

Osric Chau as Cadet Junjie JJ Chen

Kat De Lieva as Cadet Dimah Tchakova

Iain Belcher as Cadet Walter Vickers

Masam Holden as Cadet Michael "Sully" Sullivan

Daniel Cudmore as Master Chief Petty Officer John-117

Mike Dopud as General Black

Ayelet Zurer as Colonel K.L. Mehaffey

Jill Teed as Colonel Lasky

On a distant human colony world in 2525, Thomas Lasky is a freshman officer cadet struggling to fit in at the prestigious Corbulo Academy of Military Science, frequently clashing with other members of his training squad and disregarding orders, leading to low marks in training exercises. With only the encouragement of fellow freshman Chyler Silva, Lasky struggles to live up to the expectations of his military family despite his objection to a counter-insurgency campaign in progress by the United Nations Space Command. In his spare time, he is seen frequently watching video correspondence from his brother, Cadmon, who is an Orbital Drop Shock Trooper deployed to a combat zone. 

Hastati Squad remains under scrutiny by commanders because of its poor performance, which the other cadets blame on Lasky. Continually provoked by his squad mates, Lasky's frustration comes to a head resulting in a fight with Vickers in the academy mess hall. After reflecting on his situation, Lasky has a change of heart and decides to take initiative, volunteering to take point in the final training exercise of the term, a game of capture the flag against another squad. Lasky orchestrates a trick ambush on the other squad, but collapses as he is approaching the flag. 

Lasky discovers that he has a severe allergy which would allow him to be medically discharged from service, leaving him contemplating his future. It is revealed that his brother Cadmon was killed in combat with the Insurrectionists. Lasky and Silva meet outside the academy grounds and, while discussing his future, share a kiss. In the meantime, cadet Sullivan has been decoding classified combat footage which shows UNSC troops, Insurrectionists, and Spartans fighting together against a new, unseen foe. An alarm is sounded at the academy, and as the cadets attempt to evacuate via a space elevator, several Covenant vessels appear in the sky, destroying the elevator. An Eliteappears out of the mist as UNSC forces begin a battle to defend the academy. 

The Covenant attack overwhelms the UNSC defenses, killing most of the cadets and humans on the planet, including Chen, Dimah, Vickers, Mehaffey and Black. As the remainder of Hastati Squad attempts to flee from an Elite under active camouflage, they send a distress signal but are trapped in an armory. Just at the Elite prepares to strike, it is killed by

the Master Chief, who escorts Lasky, Orenski, Silva, and Sullivan out of the grounds. Outside they are ambushed by several Jackals and Sullivan is wounded, but the group manages to escape the academy via a Warthog, heading for the forest and evacuation from the planet. 

Driving through the dark forest, Chief and the remaining cadets fight off Jackals in the trees. Silva picks off three with incredible aim shortly before Lasky crashes into one on the road causing the Warthog to stall. While Chief patches up Sullivan, Silva realizes she's been hit. In the distance a Hunter is heard and Chief covers the cadets as they retreat. Silva hands Lasky her dogtags before dying. The Chief catches up to the cadets and they begin to run from yet another Hunter. Lasky volunteers to be bait allowing Chief to kill the last Hunter. The group rendezvous with the Pelican and two other Spartans allowing them to escape. 32 years later, Lasky, now a Commander on the vessel UNSC Infinity, is seen ordering a jump after listening to a distress beacon sent by Cortana from UNSC Forward Unto Dawn.