Avengers: Endgame (2019)

 Carol Danvers rescues Tony Stark and Nebula from deep space in 2018, twenty-three days after Thanos wipes out half of all life in the cosmos, and they reconnect with the remaining Avengers—Bruce Banner, Steve Rogers, Thor, Natasha Romanoff, and James Rhodes—and Rocket on Earth. They aim to use the Infinity Stones to reverse Thanos' acts after finding him on an uninhabited world, but Thanos has already destroyed them to prevent further usage. Thor, enraged, decapitates Thanos.

Scott Lang flees the Quantum Realm five years later. When he arrives at the Avengers Compound, he reveals that he was detained for barely five hours. They beg a reluctant Stark to assist them take the Stones from the past in order to reverse Thanos' deeds in the present, believing that the quantum world allows time travel. Stark, Rocket, and Banner, who has since united his intelligence with the might of the Hulk, construct a time machine. Banner observes that changing the past has no effect on the present; any alterations result in other universes. Banner and Rocket head to Norway to visit the Asgardian refugee community of New Asgard and recruit an overweight and depressed Thor.In Tokyo, Japan, Romanoff recruits Clint Barton, a vigilante who became a vigilante when his family was erased during Thanos' plan's implementation.

During Loki's attack in 2012, Banner, Lang, Rogers, and Stark time travel to New York City. Banner persuades the Ancient One to grant him the Time Stone after promising to return the other Stones to their respective points in time at the Sanctum Sanctorum. Rogers recovers the Mind Stone from Hydra sleeper operatives in Stark Tower, but Stark and Lang's effort to steal the Space Stone fails, allowing 2012-Loki to escape with it. In 1970, Rogers and Stark visit Camp Lehigh, where Stark acquires an older version of the Space Stone and meets his father, Howard. Rogers takes Pym Particles from Hank Pym in order to return to the current day and spots his long-lost love, Peggy Carter.

Meanwhile, in 2013, Rocket and Thor journey to Asgard, where Rocket obtains the Reality Stone from Jane Foster and Thor receives encouragement from his mother, Frigga, and retrieves his old hammer, Mjolnir. Nebula and Rhodes proceed to Morag to take the Power Stone before Peter Quill can, while Barton and Romanoff travel to Vormir. Red Skull, the Soul Stone's guardian, tells that it can only be obtained by sacrificing a loved one. Romanoff makes a sacrifice, allowing Barton to obtain the Stone. Rhodes and Nebula try to return to their own time, but Nebula is rendered unconscious when her cybernetic implants connect with her former self, allowing 2014-Thanos to learn of his future self's success and the Avengers' attempt to erase it. 2014-Thanos sends 2014-Nebula forward in time to meet him.

After reuniting, the Avengers put the Stones into a gauntlet that Stark, Banner, and Rocket had constructed. Banner, who is the most resistant to their radiation, wields the gauntlet and reverses Thanos' disintegrations. Meanwhile, imitating her future self, 2014-Nebula uses the time machine to send 2014-Thanos and his warship to the present, where he destroys the Avengers Compound. Present-day Nebula persuades 2014-Gamora to betray Thanos, but fails to persuade 2014-Nebula and murders her. Thanos defeats Stark, Thor, and a Mjolnir-wielding Rogers and summons his army to retrieve the Stones, intending to use them to destroy the universe and recreate it. To combat Thanos' army, a revived Stephen Strange appears with other sorcerers, the Avengers and Guardians of the Galaxy, the Ravagers, and troops from Wakanda and Asgard. Thanos overpowers Danvers and seizes the gauntlet. At the cost of his life, Stark steals the Stones and uses them to annihilate Thanos and his army.

Thor appoints Valkyrie as the new king of New Asgard and joins the Guardians following Stark's cremation. Rogers transports the Stones and Mjolnir back in time to live with Carter. In the present day, an old Rogers hands Sam Wilson his shield.