Three women gather in a locked room—an actress, an SM practitioner, and a female wrestler—each highly skilled in choking play and deeply devoted to exploring its most intense sensations. Hana Kano has been fascinated by the experience of being choked unconscious since her school days, repeatedly drawn to the sensation. Tsukio has refined her skills through SM play, both choking and being choked, and closely studies Hana's unconscious states. Erika, accustomed to choking men into submission, now examines the differences in sensitivity between men and women, exploring the pleasure of choking from a fresh perspective. Their contrasting viewpoints collide in a maddening dialogue and practice centered on the theme of fainting. As their unique choking techniques and obsessions with unconsciousness ignite, what kind of climax will emerge? Enter the world of women weaving together the art of choking within the confines of a sealed room.