The Avengers - Infinity War |link|

A recurring theme where characters must choose between their loved ones and the greater good. Thanos himself must sacrifice his daughter, Gamora, to obtain the Soul Stone.

Directors Joe and Anthony Russo had the audacity to do what no blockbuster had done before: kill the goose that laid the golden eggs. As Thanos snaps his fingers, we don’t just watch dust fly; we watch heroes panic. The Avengers - Infinity War

When the film concluded, the world was in shock. Against all odds, Thanos succeeds. After retrieving the final Stone from a grieving Scarlet Witch (Elizabeth Olsen), he snaps his fingers. The Infinity Gauntlet’s power surges across the cosmos, and one by one, beloved heroes begin to disintegrate into ash before the eyes of their horrified allies. Bucky Barnes, Black Panther, Groot, Scarlet Witch, and finally, a terrified Spider-Man who begs Tony Stark, "I don't feel so good," are all erased from existence. The film ends not with a victory, but with Thanos, wounded but triumphant, watching a peaceful sunset on a quiet alien world. This shocking, downbeat cliffhanger left audiences reeling and broke the traditional mold of the heroic blockbuster. It was a gamble that set the stage perfectly for its sequel, Avengers: Endgame , and forced the remaining heroes to grapple with the monumental weight of their loss. A recurring theme where characters must choose between