Avengers: Endgame - 15 Essential NEW Rumours & Theories

8. Cap Goes After The Tesseract

The Theory

With time travel widely expected to form a major part of the Endgame narrative, one theory suggests that Captain America and Black Widow will head to the site of his crash in The First Avengers in an attempt to retrieve the Tesseract before Howard Stark gets to it, in order to stop it eventually getting to Thanos.

New Rockstars came up with an extended look at the theory, which also suggests as an alternative to time travel that the Tesseract caused a rip in space-time at the point of the crash (and a portal), which has been guarded since the 90s by Captain Marvel.

Response

The time travel side of the theory makes more sense, as lots of speculation has focused on the idea of the Avengers time travelling to get their hands on the Stones before Thanos. That theory about a space-time rip is a little more pie-in-the-sky, no matter how much it answers some compelling questions.

If any of it turns out to be correct, expect it to be the former, rather than the latter.