In a chilling blend of horror and festivity, the story follows a man named Harry, who has been obsessed with the celebration of Christmas since childhood. However, a dark trauma marked him forever: as a child, he witnessed how his peers mocked his love for the holiday, ruining the magic of that time of year for him. Now, as an adult, Harry leads a mundane life surrounded by a world that seems to ignore the true spirit of Christmas.
Disillusioned and frustrated by the behavior of those around him, his fascination quickly turns into madness. Observing the greed and hypocrisy of those seeking superficial gifts and pleasures, he decides to take matters into his own hands. Armed with a Santa Claus costume, he embarks on a sinister mission. What begins as a quest to reclaim the essence of Christmas devolves into a terrifying descent into chaos, where carols are replaced by screams of terror.
As he spirals towards madness, Harry becomes a vigilante of "Christmas Eve," taking revenge on those he deems unworthy of enjoying the holiday. The film mixes elements of psychological horror with social critique, creating a dark and chilling tale about obsession, loneliness, and the loss of innocence during a time that should be joyful. Will anyone be able to stop his terrifying crusade before it’s too late?