The boss lady of the mountain inn near three suppressed monsters enforces a strict no children rule to keep everyone safe from the things that appear at night.
A last-minute addition to the tour group brings a mother and her young son, prompting her to demand they leave or the whole group must go.
She exposes the woman as someone else’s mistress who secretly gave birth to the illegitimate child, and the bratty boy attacks her viciously.
As the tourists begin to side with her and night approaches with heavy yin energy noted, will everyone in the inn suffer if the child stays?
