Scarlett Johansson gets down to business in the first teaser trailer for the upcomingAvengersfranchise flick,Black Widow. In the preview, which premiered Tuesday, ScarJo's title character (a.k.a. Natasha Romanoff) returns to her native Russia, where she quickly faces off against her "sister," Yelena Belova, played by Florence Pugh. Co-starring in the film areStranger Things'David Harbour as Alexei Shostakov (a.k.a. the Red Guardian) and Oscar winner Rachel Weisz as Melina Vostokoff.ETnotes thatBlack Widowtakes place after the events of Captain America: Civil War and Avengers: Infinity War,but before this past summer'sAvengers: Endgame. (In that movie--spoiler alert!--Black Widow died.)Black Widowhits theaters on May 1, 2020.