Husbands who want to be cuckolded and wives who accept their desires. Those seeking new stimulation drown in the excitement of the extraordinary... Yamamoto and Sonoda, who work for a video production company, become interested in "swapping" after hearing about it at work and propose it to their wives during a trip. Taking advantage of their wives' receptive attitudes, the husbands take each other's wives to their respective rooms upon returning to the inn and sleep with them. After experiencing pleasure multiple times, both couples become captivated by sensations they never knew existed. The debaucherous feast unfolding in a strange space far removed from daily life drives the two couples to madness...