Waiting for her husband to return, Ren is suddenly enveloped by a bright flash. When she regains consciousness, she finds herself restrained in an unfamiliar room unlike anything she has ever seen. The space is filled with unknown mechanical equipment, and she has been captured as part of an experiment aimed at analyzing the reproductive genetics and sexual limits of human women. Multiple tests are prepared to collect data from her body and gain deeper understanding of the concept of reproduction. As the procedures unfold, Ren is forced to confront the physical and psychological changes taking place within her, exploring the true nature of reproduction itself. In this alien environment filled with threat, she is made to expose both her body and mind completely.