Amana Kurisaka agrees to be an art model, only to find herself thrust into a world of nude modeling and public exhibitionism. Haunted by a childhood incident that sparked her hidden desires, Amana is manipulated by a cunning instructor into increasingly daring and depraved sexual acts in public. As her secret life spirals out of control and rumors spread through her hometown, Amana eventually abandons her inhibitions and fully embraces her identity as a public sex doll.
Feeling like an obstacle in her brother's relationship with Aya, Sumika is manipulated by Susaki into a life of sexual exploitation. However, when Aya discovers the truth and chooses to sacrifice herself to rescue Sumika, the two girls form an unbreakable bond through their shared trauma. No longer feeling like a hindrance, Sumika finds a new sense of belonging and hope through Aya's unwavering support.