For Leo Grant, being ripped from his own reality and dropped into the Marvel Universe was just the beginning of his problems. For three years, he kept his head down, focusing on his physics homework and trying to forget the impossible had already happened.
But on one rainy New York night, a single, sleep-deprived joke on a college forum—a throwaway comment about "Snake S.H.I.E.L.D."—changes everything. The post plunges him into a shadow war he never wanted, with the deadly assassins of Hydra hunting him through the city streets. But it does something else, too. It rips a hole in the fabric of worlds.
Suddenly, Leo is connected to the First World—a dying realm being bleached from existence by a relentless Flood of Light, where twisted monsters called Sin Eaters prey on the last vestiges of life. There, he meets Ashem, a mysterious cat-like warrior of light summoned from that world, fighting a losing battle. The two share an impossible connection, a resonance in their very souls that feels like looking in a mirror across dimensions.
Forced into a desperate alliance, they begin to journey between realities, struggling to unravel a cosmic mystery where the fundamental laws of physics are at war with each other. A desperate alliance is forged between Earth's mightiest heroes and the First World's powerful mages. Super-soldiers and tech geniuses fight alongside black mages and paladins to face a crisis that threatens to unravel both time and space.
As light and shadow bleed between universes, can a physics student from another life and a lone warrior of light find a way to save both of their worlds from total annihilation?