An old lady who cleans the hallway of an apartment building every time she passes by. At first glance, she seems like a plain, ordinary middle-aged woman, but when she suddenly shows an opportunity, she pounces on the man and seduces him with an obscene kiss, perhaps because things aren't going well with her husband. The old lady then goes into the man's house, and after being completely seduced by the kiss, she lustfully devours his body to the very core.