As published by HaloWaypoint on YouTube:
This week on Halo 4: Spartan Ops — The mysterious artifact recovered from Requiem takes control of vital systems on board the UNSC Infinity, forcing the Spartans of Crimson and Majestic back down to the planet to look for a way to free the ship. Commander Lasky and the UNSC need you, Spartan…get back in the game!