New avengers movie 2018

You're referring to Avengers: Infinity War (2018) and Avengers: Endgame (2019), which are the two movies that conclude the Infinity Saga in the Marvel Cinematic Universe (MCU).

Here's a brief summary of each movie:

Avengers: Infinity War (2018)

The movie brings together a massive ensemble cast, including Iron Man (Robert Downey Jr.), Captain America (Chris Evans), Thor (Chris Hemsworth), Hulk (Mark Ruffalo), Black Widow (Scarlett Johansson), and Hawkeye (Jeremy Renner), as well as the Guardians of the Galaxy, Doctor Strange (Benedict Cumberbatch), and Spider-Man (Tom Holland).

The movie follows Thanos (Josh Brolin), a powerful and mad Titan who seeks to collect all six Infinity Stones to wipe out half of all life in the universe. The Avengers and their allies must band together to stop Thanos and his Black Order from achieving their goal.

Avengers: Endgame (2019)

The movie takes place after the events of Infinity War and follows the surviving members of the Avengers as they try to undo the damage caused by Thanos. The team uses the Quantum Realm to travel back in time and gather the Infinity Stones, with the goal of using them to restore balance to the universe.

The movie features a star-studded cast, including many of the same characters from Infinity War, as well as some new additions, such as Captain Marvel (Brie Larson) and the original Ant-Man (Paul Rudd).

Avengers: Endgame was a massive commercial success, breaking numerous box office records and receiving widespread critical acclaim. The movie concludes the Infinity Saga and sets the stage for the next phase of the MCU.