The Eternals, an ancient race of immortal beings with superhuman powers, are sent to Earth by the Celestials to protect humanity from the monstrous Deviants. After living in secret for thousands of years, the Eternals reunite in the present day when the Deviants reemerge, threatening the planet. As they confront this ancient enemy, the team grapples with their purpose, their loyalty to the Celestials, and a shocking revelation about their role in Earth’s history, leading to a battle that could determine the fate of humanity.