Kumi and Rika are widowed and single-mother families. Their sons, Tsutomu and Makoto, are still crazy about delusions today ... "My mom looks lonely ..." "Oh ... then, Tsutomu's mom, let me hold you!" "Then let Makoto's mom hold me too!" "Okay! ! "I executed a plan to exchange each other's mothers and have sex ... [* There is some distortion in the image and sound]