A coastal village becomes trapped beneath thick fog every night at midnight. During the fog, ghostly children appear in the streets singing ancient lullabies. Anyone who follows them disappears forever. A grieving mother whose son vanished years earlier becomes obsessed with uncovering the truth behind the children. She discovers hidden caves beneath the cliffs connected to shipwrecks and human sacrifices from centuries ago. Include emotional storytelling about grief and obsession, eerie nighttime fog scenes, supernatural mystery, terrifying visions, and a heartbreaking ending.