The film starts with the arrival of Thanos, a powerful and evil Titan, who seeks to collect all six Infinity Stones scattered across the universe. If he can acquire all the stones and put them in his Infinity Gauntlet, he will have the power to wipe out half of all life in the universe with a snap of his fingers.

The Avengers, along with some of their new allies like the Guardians of the Galaxy and Doctor Strange, join forces to prevent Thanos from achieving his goal. However, despite their best efforts, Thanos proves to be too strong for them, and he manages to collect all the Infinity Stones one by one.

In the end, Thanos snaps his fingers, and half of all life in the universe disintegrates, including many of the Avengers and their allies. The movie ends on a bleak note, with the surviving heroes vowing to avenge their fallen comrades in the sequel, “Avengers: Endgame.”

Overall, “Avengers: Infinity War” is a dark and intense movie that showcases the immense power of Thanos and the desperate struggle of the heroes to stop him.

Continuing from the previous summary, after the devastating event known as “The Decimation,” the remaining Avengers, including Iron Man, Captain America, and Black Widow, along with new allies like Captain Marvel, hatch a plan to travel back in time and collect the Infinity Stones before Thanos can get his hands on them.

Their journey takes them to various moments in the past, including the events of the first Avengers movie, the battle of New York, and the planet Vormir. However, their mission is not without challenges and sacrifices, including the sacrifice of Black Widow to obtain the Soul Stone.

In the end, the Avengers manage to collect all the Infinity Stones and create their own Infinity Gauntlet to undo the Decimation. In an epic showdown, they face off against Thanos and his army, resulting in a climactic battle that spans across multiple dimensions.

Ultimately, Iron Man is the one to make the ultimate sacrifice, using the power of the Infinity Stones to defeat Thanos and his army once and for all, but at the cost of his own life.

The movie ends on a bittersweet note, with the surviving heroes mourning the loss of their fallen comrades and reflecting on the sacrifices they made to save the universe.

“Avengers: Endgame” is a fitting conclusion to the Marvel Cinematic Universe’s Infinity Saga, showcasing the immense bravery and sacrifice of the heroes in the face of unimaginable danger.