Joss Whedon's acclaim in the superhero community might have fallen somewhat of late, due to his less than successful stint with DC, but let's not forget that he was the writer/director behind the Marvel Cinematic Universe's original team-up movie in 2012's The Avengers.
Don't have time for that? Perhaps Captain Marvel was the person that previously prevented Thanos from achieving his destiny - he mentioned that line to Gamora in Infinity War. Thanos clearly announces in the trailer, "In time you will know what it feels like to lose ..." Captain America battles Red Skull, and ultimately Red Skull unwisely touches the Tesseract with his bare hands.
Thanos is the main character of this film which makes sense because there are too many other main characters to do them justice so the focus needed to be on the motivations of the villain.
Here we learn there are six Infinity Stones. The only one we haven't seen yet is the Soul Stone.
We also know that at one point in his past Thanos almost turned away from his destiny. After fighting by his side for years, she refuses to help him and Ronan kill millions of innocent people. The Guardians, all of them are zipping through space, answering distress signals, when they find the unconscious, barely alive Thor (Chris Hemsworth), who has been beaten to a pulp by Thanos and his cronies. Infinity War not only leaves the entire MCU shaken, it works to leave fans of this universe shaken, as well. So with that information in mind, that means that it's possible that Avengers: Infinity War will hit Netflix on December 1, 2018. Seeing Black Widow (Scarlett Johansson) and Scarlet Witch (Elizabeth Olsen) fighting alongside Wakanda's Okoye (Danai Gurira) and the warrior women of Wakanda provides some flawless badassery. But Thanos' quest can't be good for Vision.
Which is exactly where the post-credits scene picks up.
The fight at the end of "Civil War" leaves the Avengers split. That's particular trouble for Earth, because one stone is embedded in the forehead of Vision (Paul Bettany) while another is in the custody of Stephen Strange (Benedict Cumberbatch). There was only one character who was so indispensable that Doctor Strange actually gave up the Time Stone to save his life: Tony Stark. Odd then becomes the protector of the Time Stone.
"But there are shadings of what Taika was doing in Ragnarok with the character". However, the ship is intercepted by a larger ship we believe could be Thanos' spacecraft.
We know from the outset what the super-heroes probably don't.