In a remote Andean village, the idyllic stillness is shattered by the brutal murder of a local shepherd. As investigator Mariano Llamosas delves into the case, he uncovers a web of lies, decades-old vendettas, and a community grappling with its haunted past. The glacier, an ancient witness, thaws to reveal startling clues—remains of a decades-old victim and a truth buried beneath layers of snow. The story alternates between the present investigation and flashbacks to the 1980s, where a family’s betrayal set the stage for the violence to come.