"Saint Seiya: Legend of Crimson Youth" is a 1988 anime film set within the "Saint Seiya" universe, serving as a condensed retelling of the Asgard arc from the original series. The narrative centers on the Bronze Saints—Seiya, Shiryu, Hyoga, Shun, and Ikki—as they confront a new threat tied to the goddess Athena and the mysterious Crimson Youth, Abel. Abel, claiming to be Athena's older brother and the true ruler of Earth, challenges her authority and seeks to overthrow her. He manipulates the Asgard God Warriors, led by the enigmatic Loki, to wage war against Athena and her Saints.

The conflict begins when Abel descends from the heavens, asserting his divine right to rule. He imprisons Athena and constructs a massive temple in the skies, from which he plans to dominate the world. The Bronze Saints, loyal to Athena, embark on a perilous journey to rescue her and restore balance. Their path is fraught with battles against the God Warriors, each possessing unique abilities and armor tied to the constellations of Asgard. These confrontations test the Saints' strength, resolve, and unity as they fight to protect Athena and humanity.

Seiya, the Pegasus Saint, emerges as a central figure, driven by his unwavering loyalty to Athena and his determination to protect his friends. Shiryu, the Dragon Saint, and Hyoga, the Cygnus Saint, showcase their tactical prowess and resilience, while Shun, the Andromeda Saint, and Ikki, the Phoenix Saint, contribute their unique abilities and emotional depth to the group's dynamic. The film emphasizes themes of loyalty, sacrifice, and the enduring bond between the Saints and Athena.

As the story progresses, the true nature of Abel's identity and his connection to Athena are revealed, adding layers of complexity to the conflict. The climactic battle between the Saints and Abel's forces culminates in a dramatic showdown, where the power of friendship and the Saints' unwavering determination are put to the ultimate test. The resolution underscores the enduring legacy of the Saints' commitment to justice and their role as protectors of Earth.

"Legend of Crimson Youth" condenses the Asgard arc into a self-contained narrative, offering a streamlined yet impactful exploration of the "Saint Seiya" mythos. The film retains the core elements of the series, including intense battles, mythological references, and the enduring bond between the Saints and Athena, making it a notable entry in the franchise.