Mei and her boyfriend are searching for a new home together when they come across an old Western-style mansion being offered at an unbelievably low price. However, the moment they step inside, they find themselves trapped by a group of malicious, depraved old men who have been lying in wait. Mei desperately resists their cruel advances, but each attempt to fight back only leads to more intense forced pleasure, dragging her deeper into their vile acts despite her suffering. What follows marks the beginning of an unimaginable hell for the couple.