A mathematician witnesses his best friend's shooting in a Madrid gas station in 2008. Years later, a 10-year-old boy is bullied into buying a magazine at the same station, where he finds a note predicting his own death. As the boy's fear grows, the mathematician delves into the station's dark past, uncovering a pattern of tragedies. With time running out, he must uncover the truth behind the incidents and prevent a potential repeat before it's too late.

The Warning
A mysterious letter threatens the life of a young boy, who must convince others of the impending danger, but a cryptic stranger appears, sensing that fate is against the boy's survival.