On Carnival night in the remote mountain village of As Neves, local teenagers celebrate at a party where they try magic mushrooms for the first time. The revels are disrupted by a compromising video shared within the group. The following day, heavy snowfall has left the village isolated and without internet access when it is discovered that Paula is missing. The investigation into her disappearance will provoke an avalanche of guilt and mistrust, forever altering relationships in the village of As Neves.