InuYasha and his companions, after facilely defeating a demon in a town, are invited to a banquet as a reward. Oddly enough, Myoga the flea y?kai servant returns, as series of strange occurrences ensue. Sango, Miroku, and InuYasha are all possessed one after another, experiencing unorthodox behavior. Little do they know, Shoga, a female flea y?kai, is responsible for this, all in the desire to marry Myoga.