The events in new film take place after The Black Panther's appearance in Captain America: Civil War. T'Challa returns home to Wakanda to defend against a challenge to his position as King. It has been shared that we will see how he deals with the death of his father as he assumes his position and must partner with the country's all female Special Forces the Dora Milage to defeat his enemies and prevent a World War.
We also get a few more glimpses of the shrouded country of Wakanda, full of unique architecture and natural wonders. And the Black Panther's new costume, whch seem to has some significanace and some additional features.
It's not an origin story, but this film will show a younger and perhaps more volatile character that the wise and confident Black Panther that appeared in many comics. We'll know for sure on February 16, 2018 when Chadwick Boseman brings the character to life again on the big screen.