It showed Tony Stark, Thor, Captain America, Black Widow, Hawkeye, The Hulk, Maria Hill and Rhodey all kicking back together inside what looks like Stark Tower. The boys all decide to test their strength and see if any of them can lift Mjolnir, Thor's hammer.
Only one of them stands a chance ... check out the video above.
The party is then interrupted by the creepy robot known as Ultron, who might just be the scariest andriod we've ever seen. "How could you be worthy, you're all puppets tangled in strings," James Spader's menacing voice says before the full trailer plays out.
The footage debut comes after Marvel revealed its plans for standalone films for new properties like "Captain Marvel," "Doctor Strange" and "Black Panther" -- click here for all the details.