Ok kids, it’s time to head back to the 1930s for the final season of Agents of SHIELD, a show which has traveled the world, moved through space and time, explored how far the human mind and body can be pushed and invented or transformed almost every sort of scifi tech imaginable. This season, they play in what’s probably the only sandbox they’ve left unexplored, the past, specifically SHIELD’s past, which also happens to be the MCU and Avengers’ past as well.
This season begins a few seconds before last season ended, in order to remind viewers of the shocking changes that Jemma Simmons introduced Mack and Daisy to in the final moments of season 6. The Chronicom subplot which played second fiddle to the Sarge/Izel/Shrike war in season 6 now moves to the forefront, having turned into a full blown time war. The Chronicoms hope to wipe out SHIELD so that they can then conquer Earth and turn it into their new homeworld, Chronyca 3.
SHIELD is a formidable adversary in the 21st century, so the Chronicoms decide it would be easier to beat them earlier in SHIELD’s history. The aliens have (probably) used the mindscans they made of Jemma and Fitz in season 6 to develop time travel, which they now use to go to significant points in the 20th century in order to change SHIELD’s history. If episode 1 is any indication, the Chronicoms have dug deep in their examination of history so their targets aren’t necessarily obvious ones, but the connections to old friends sure are fun.