A forestry work station located deep in the mountains, owned by a major trading company. Here, a unique "employee welfare" system has been established to prevent staff turnover. This horrifying system involves forcibly detaining female employees who come for on-site inspections, turning them into public sex slaves for the workers. Bound and helpless, the women must endure thick, copious ejaculations from sweaty men poured into their mouths, vaginas, and anuses until they lose their sanity. Gradually, their minds and bodies succumb to the role of a toilet woman, losing all innocence. Witness once more their terror and pitiful downfall.