El Cuco - An adventure in the dark, is a story that follows the journey of two brave siblings in search of their parents, who have been kidnapped by the mysterious Cuco and taken to an unknown dimension called Majihara.
Alondra and David confront the mysterious and sudden disappearance of their parents. David claims to have seen the Cuco take them away, but Alondra, filled with skepticism, refuses to believe in such a creature. The distrust between the siblings deepens as they investigate the disappearance.