As Super-Bowl celebrating in US Avengers Endgame shared a New 30 Second clip trailer. In it you can see Tony stark and Nebula they are working on something. As Captain America seeking something.
While trailer start you can see there a poster with text “Where do we go, Now that they’re gone?”
Antman and Rhodes are just get ready to attack something. Thor you can see himself as walking with his thunderstorm hammer and you can see Rocket also entry something like room.