In a world where trauma and grief can manifest into tangible nightmares, a shy 14-year-old girl named Ai Ohto discovers a mysterious gacha machine that dispenses eggs, each one containing a girl trapped in a dreamlike realm. By breaking these eggs, Ai is tasked with saving these girls from the monstrous embodiments of their own psychological scars, all while battling the eerie, silent figures known as the Wonder Killers. As Ai delves deeper into this surreal mission, she is joined by three other girls: the stoic Neiru Aonuma, the fierce Rika Kawai, and the gentle Momoe Sawaki, each carrying their own heavy burdens of guilt and loss. Together, they must confront their deepest fears and unravel the cryptic connection between the egg world and the tragic suicide of Ai’s best friend. Blending psychological horror with poignant coming-of-age drama, this anime series explores themes of self-harm, identity, and the fragile nature of hope, offering a visually stunning and emotionally devastating journey that questions the very value of life itself.