A year after their mother's death, two children climb a treacherous mountain to keep their father's broken promise — unaware that the snowman they once built has come to life on the same mountain, and is melting with every step he takes toward them.

SYNOPSIS:

Synopsis

The Setup Following the death of his wife, Elias is a father paralyzed by grief, actively breaking his promise to keep the magic of the holidays alive for his twelve-year-old twins, Leo and Lila. Desperate to hold onto the memory of their mother, the twins sneak out into a deadly winter storm to climb the treacherous Never-Melt mountain. Their goal: to fulfill a year-old family promise and build a "brother" for Frost, the snowman they created on their last happy Christmas.

Unbeknownst to the family, a violent, aurora-charged lightning strike on the summit has awakened Frost. Anchored by the oversized red scarf Lila left around his neck a year ago, Frost feels the phantom warmth of their love. Driven by a desperate need to find out if he matters to the people who made him, Frost begins a clumsy, determined descent into the dark woods below.

The Confrontation The mountain quickly becomes a dangerous crucible. As Elias discovers his children are missing and launches a frantic, guilt-ridden pursuit, Frost navigates the terrifying lower trails. But his magic comes with a devastating rule: warmth equals death. Every time Frost experiences the joy of human connection, or exerts his magic to protect the family, his snowy body rapidly melts.

Despite terrifying warnings from ancient mountain spirits offering him the peaceful numbness of freezing forever, Frost chooses the pain of love. He shadows the twins through the blinding whiteout. When a massive ice bridge collapses, Frost sacrifices his own physical form to flash-freeze the ledge and save the children. The effort completely destroys his body, reducing him to a puddle and a rapidly dimming, glowing ice-core.

The Resolution Elias finally breaks through the storm and reaches his children, only to find them huddled over the dying, glowing heart of their magical friend. Realizing his own broken promises almost cost his family everything, Elias steps up to be the father they need.

In a breathless, high-stakes relay race against a ticking clock, the family tethers themselves together to carry Frost's fading heart up a sheer, vertical ice wall. They reach the peak of the Never-Melt just as the core's light is about to extinguish. In the shadow of the aurora borealis, the family furiously builds Snowman Number Two—the promised brother—and buries Frost's dying core inside the eternal snow. The magic reignites, safely housing Frost’s spirit within the new creation. The mountain is conquered, Frost's promise is kept, and Elias finally allows his family to heal.