The episode starts out with the gang sensing a "strong demonic aura". They all ready themselves for the demon. Suddenly, a large centipede demon jumps from the ground and everyone attacks. The demon stops moving and Kagome orders everyone to stop attacking. The demon then falls to the ground and Kagome wonders why the demon didn't put up a bigger fight (Inuyasha, of course, is upset that he couldn't slice it to pieces). There is cheering behind them and all the people of a small village thank them for defeating the demon that had been terrorizing their town. The head man asks Miroku to join him and his family for dinner and Miroku politely declines. But, when the man mentions all the "beautiful young ladies" that were waiting for Miroku's arrival, Miroku quickly changes his mind.
Miroku is seen asking a woman to bear his children, but the woman is moved aside by an OLD woman who agrees to have however many children that Miroku wants. Miroku pleads for Sango to help him, but she is too upset that he was asking girls to bear his children. The woman makes a joke about her "not being rusty" and everyone in the room but Sango and the gang laugh. Kagome comments on how she didn't know that they had family reunions in the feudal era. Inuyasha asks what a family reunion is and after she explains it to him, he gets an image of him and Sesshomaru eating together. Very funny! Myoga then appears and says that he has been having trouble lately, and then starts laughing.
They all go to sleep and Miroku is woken up by a little boy who has to go "wee wee". Miroku takes him to the bathroom (He'd be a good daddy!) and goes back to bed. You see another person (just their feet) walking into his room. He tells the person, without looking at them, to be a good boy and go to the bathroom on their own. He turns around and Sango is standing there, staring at him. He asks her to sleep with him and she attacks him. Inuyasha and the rest wake up and Inuyasha stops Sango. They find out that she was being possessed. They go back to the carcass of the demon they had defeated earlier and seal it again. Miroku becomes possessed and attacks Sango, but he trips and becomes himself again (after rubbing Kagome's butt). Inuyasha then becomes possessed and chases after Shippo. He catches Shippo and starts talking sort of dirty to him and starts to strip. Kagome yells "Sit boy!!!!!" and he becomes himself again.
It turns out that the one who was possessing them was Shoga, the flea that Myoga was supposed to marry. The two fleas have a long fight and the gang finally get them married. But Myoga, not wanting to get married, runs away and Shoga chases after him.