After Wandavision and Falcon and the Winter Soldier's release, Loki will be the next Marvel Cinematic Universe series debuting on Disney+. Now, we have an actual launch date alongside a new trailer to give us a taste of what to expect.
The series follows the events of Avengers: Endgame, where an alternate version of Loki (Tom Hiddleston) took the Tesseract with him and disappeared. The Time Variance Authority later apprehends him. And we see Hiddleston's Loki with TVA official Mobius M. Mobius (Owen Wilson) as he tasks Loki with repairing the variations in the timeline that got destroyed because he broke reality with the Tessaract. But as this trailer shows, it might be a bit tough to trust Loki.
Source: Engadget