The plot revolves around the sudden appearance of an alien threat, known as the "Eclipse," which manifests as a massive, reality-bending entity with the power to manipulate the fabric of space-time. This entity is drawn to the mutant gene, seeking to eradicate it from existence. The X-Men, along with other mutant heroes, must band together to stop the Eclipse and prevent a catastrophe.
Throughout the "Eclipse" storyline, Whedon and Cassaday explore a range of thought-provoking themes and symbolism, including: xmnx eclipse