Avengers: Endgame kicks off with a poignant montage of events depicting the aftermath of Thanos' snap in Avengers: Infinity War. The scenes showcase the devastating effects of the Mad Titan's actions, which resulted in half of all life in the universe being erased from existence. The montage concludes with a moment of introspection from Thor (Chris Hemsworth) in space, desperately trying to come to terms with the unprecedented loss of life. Meanwhile, a wounded Captain America (Chris Evans) awakens to find himself trapped in the year 2012, exactly five years before the events of the first Avengers film. This revelation sets off a thrilling sequence of events as a desperate Captain America travels through time to recruit key allies from the past, in a bid to restore balance to the universe. In the present, Tony Stark (Robert Downey Jr.), aka Iron Man, and his fellow surviving Avengers are struggling to cope with the trauma inflicted by Thanos. Their combined efforts to find a solution are hindered by the severe consequences of the snap, which left numerous heroes deceased, and left a majority of the living in a state of existential despair. In their time travel quest, Captain America seeks out a reclusive James Rhodes (Don Cheadle) - aka War Machine - to reinvigorate the surviving Avengers' hope for a better future. With Captain America leading the charge, they visit key points in the past, convincing previous allies such as Black Widow (Scarlett Johansson), Hulk (Mark Ruffalo) and Black Panther (Chadwick Boseman) to divert their course and support the original Avengers team. Their initial efforts culminate in a dramatic confrontation with 2012's Iron Man, who, with the valuable assistance of his fellow team members, including Hawkeye (Jeremy Renner) and Ant-Man (Paul Rudd), develops an experimental time heist plan designed to prevent a series of catastrophic future events orchestrated by their younger selves. The Avengers, with their expanded roster, set out on an unpredictable journey through time, navigating a distorted timeline to correct key events and secure crucial resources they need to defeat Thanos and restore balance to the universe. Notably, this journey propels Black Widow and Thor onto a pivotal path, establishing unique personal motivations that will significantly affect their overall conflict with Thanos in the long run. However, as the stakes escalate, the team is faced with time paradoxes and gravity, threatening to overthrow the fabric of time itself. The crew's fragile connection to one another becomes increasingly fragile in their desperate struggle to assemble the Infinity Stones once more. This epic journey transforms Into a gripping existential inquiry into the Avengers' core identities, alliances, and values as they grapple with the weight of world-shattering consequences. The heroes are drawn to New York where they put into motion a series of high-stakes battles as they seek out and gather each remaining infinity stone. But Thanos, aware of their plan to defeat him and fueled by his twisted madness, relentlessly pursues them throughout the ages with an unwavering resolve to eliminate every last glimmer of hope from existence. This relentless pursuit lays bare Thanos' unwavering dedication to his doomed, yet highly conflicted vision for existence. A frenzied climax ensues as a now more mature gathering of Avengers emerge victorious in an all-encompassing epic collision of life force, where both sides finally channel the quintessential culmination of their energies to engage Thanos in a battle unlike any the world has ever witnessed. Ultimately, amid heart-wrenching sacrifices and selfless acts of heroism, Avengers: Endgame concludes with a powerful rebirth in which heroism transcends centuries and the cosmic balance of the universe is ultimately redeemed through a universe-spanning stand to revive 50% of existent beings that Thanos had wiped out.