Years after a catastrophic volcanic eruption plunged the world into endless winter, structural engineer Elijah Bailey and his young son Leo struggle to survive beneath a suffocating blanket of ash. Every breath is filtered. Every meal is rationed. Every shelter is one collapse away from becoming a grave.
As their fragile refuge begins to fail and desperate scavengers roam the wasteland, Elijah must lead his son across a frozen, dying world where survival is measured in hours, not days. Armed with little more than engineering knowledge, fading supplies, and a father's determination, he faces impossible choices that test the limits of hope and sacrifice.
Gray Horizon is a gripping post-apocalyptic survival thriller about endurance, resilience, and the unbreakable bond between a father and his son in a world where the future has been buried beneath the ashes.