Natsumi and Keijiro's dream is for Keijiro to be recognized as a Noh mask maker. Keijiro spends his days working hard at making Noh masks under his master, Jinguji. Meanwhile, Jinguji, who has had his eye on Natsumi for some time, conveniently fabricates the idea that it's for Keijiro's sake and approaches Natsumi. Unable to refuse when he brings up her husband's dream, Natsumi gradually falls into the swamp of lust, even though she knows it's wrong...