Ai Ooto finally stands on the brink of solving the enigma surrounding her best friend's death by suicide. By entering the surreal, dreamlike realm of the Wonder Egg and rescuing people from their hardships, she achieves her ultimate aim: to bring her friend back from the grave. However, with her companion alive again, Ai feels bewildered and wounded when she realizes she no longer remembers her.
She is not alone in facing alienation after saving someone. In reality, the other girls entangled in these events also endure similar fallout for reviving a life. As they attempt to accept their altered reality, the girls confront the wounds of their "task" and wonder whether they should return to the Wonder Egg to uncover every hidden truth and the mysteries that echo through every choice they've made together forever.
