Death or love slave? Make your choice

A lesbian couple goes to an apartment to buy a bunk bed they saw in an ad. They quickly sense that something is not quite right with the man selling the bed, as he has covered all the windows in the apartment with garbage bags, something he says is because he works night shifts. The longer they stay in the apartment, the more it becomes clear that something is very seriously wrong. Soon they are stuck in the apartment with the man, waiting for his wife, who wants to talk with them.