Explain the plot of the new avengers infinity war

I think there may be some confusion here!

Avengers: Infinity War is actually a 2018 superhero film directed by Anthony and Joe Russo, and it's the 19th film in the Marvel Cinematic Universe (MCU). It's not a "new" Avengers movie, but rather a culmination of the previous 18 films in the franchise.

Here's a brief summary of the plot:

The film takes place after the events of Thor: Ragnarok, Black Panther, and Spider-Man: Homecoming. Thanos (Josh Brolin), a powerful and mad Titan, is on a quest to collect all six Infinity Stones, which would grant him unimaginable power and allow him to wipe out half of all life in the universe.

The Avengers, led by Iron Man (Robert Downey Jr.), Captain America (Chris Evans), Thor (Chris Hemsworth), Hulk (Mark Ruffalo), Black Widow (Scarlett Johansson), and Hawkeye (Jeremy Renner), team up with the Guardians of the Galaxy, Doctor Strange (Benedict Cumberbatch), and Black Panther (Chadwick Boseman) to stop Thanos from collecting the Infinity Stones.

As the Avengers and their allies try to prevent Thanos from achieving his goal, they face numerous challenges and sacrifices. The film features epic battles, emotional moments, and shocking twists, including the devastating conclusion where Thanos ultimately collects all six Infinity Stones and uses them to wipe out half of all life in the universe.

The film ends with a cliffhanger, setting the stage for the next Avengers film, Avengers: Endgame, which was released in 2019.

I hope this clears up any confusion!