A glimpse of a green halo over Tony Stark and we immediately get a gloomy feeling, the impending doom has already struck down, and we are transported to the fatal events of the previous movie. Thanos has really wiped out 50% of the universe and the Avengers are shattered; they have been defeated, yet there seems to be a glimmer of hope.
The trailer begins with a monologue from Tony, a message addressed to his beloved Pepper Potts, but really a message for all of humanity to hear. He had been beaten by the all-powerful Thanos and despite all their attempts, they failed to defeat him. He is seen stranded in space, an unknown region, adrift and desolate. His means of sustenance are finished and the air is running out as well, it will only be a matter of time before his terrible demise occurs.
The trailer then takes us to earth, where the consequences seem to be dire, and we see a sullen Steve Rogers lamenting the death of his brothers in arms, and more. However, it’s not just Steve; we see a very distraught Bruce Banner and Thor, each of whom is thinking about the next course of action.
The scene then skips to various other characters, and we finally get a glimpse of Hawkeye, who has now taken up the persona of Ronin. Now The Black Widow and Captain America are discussing a plan, which the Widow is certain is going to work. The Captain has his doubts, but he is fully behind the plan. The final scene is where the real shroud of mystery lies, we see a very energetic Scott Lang, better known as the Antman, who is shouting at the camera, requesting permission to let him in. The reason the scene carries such momentous value is that in the premise to the movie, he is seen stuck in the quantum realm. His escape brings about some much-needed answers and perhaps a solution to defeating Thanos and undoing his actions.