Warning: This article contains major spoilers for “Black Widow” and “The Falcon and the Winter Soldier.”

“Black Widow” has two post-credits scenes — one that sets up an old Marvel film and another that sets up where the Marvel Cinematic Universe is going next.

Just a note — When I watched “Black Widow” in a prerelease screening, the post-credits scenes were aired back to back. In normal Marvel films, one scene will air after the first round of credits (which often feature a logo and a list of the main actors) and a second scene will air after the full credits roll.

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The first end-credits scene begins when Black Widow — now with the blonde hairstyle she has in “Avengers: Infinity War” — meets with her old friend, Rick Mason (O-T Fagbenle). He shows her that he’s given her a new ship — one that you might recognize as the new Avengers Quinjet, which was seen in “Avengers: Infinity War.”

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Black Widow then says she has to go repair the damage of her other family — the Avengers — and break the Avengers out of prison. This is a nod to the “Captain America: Civil War” end scene, where we see the Avengers, recently arrested by the government, being broken out of prison.

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The second post-credits scene will leave some fans shocked. My jaw actually dropped when I watched this scene, so be warned that there might be some shock.

The second post-credits scene shows Yelena (Florence Pugh) visiting the gravestone of Natasha/Black Widow (Scarlett Johansson). This takes place after the events of “Avengers: Endgame,” in which Black Widow sacrificed herself so the Avengers could nab the Soul Stone.

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The heart-wrenching moment is cut short, though, as Julia Louis-Dreyfus sneezes from the side of the screen. She then exchanges some dialogue with Yelena, and it’s hinted that Yelena is working for Dreyfus’ character.

Then, Louis-Dreyfus’ character hands Yelena a piece of paper that shows Hawkeye (Jeremy Renner). Louis-Dreyfus says that Hawkeye is responsible for the death of Natasha.

Marvel fans will recognize Louis-Dreyfus as Valentina Allegra de Fontaine, who first appeared in “The Falcon and the Winter Soldier.” She was influential in encouraging John Walker (Wyatt Russell) to suit up again in a black Captain America suit. She said the world is about to get weird, and the U.S. will soon need a U.S. agent and not a Captain America.