Ai Ooto is finally on the verge of solving the mystery surrounding her best friend's suicide. After entering the strange, dreamlike world of the Wonder Egg and saving people from their hardships, she achieves her ultimate goal of resurrecting her friend from death. However, now that her friend is alive, Ai feels confused and hurt upon realizing that her friend no longer remembers her. She is not the only one alienated by the person she saved. In fact, the other girls involved in these events face the same consequences for bringing someone back to life. As they attempt to understand their new reality, the girls come to terms with the trauma from their "mission" and question whether they should re-enter the Wonder Egg to uncover the truth behind everything.