Rachel, Rebecca's mother, has emerged from her long slumber. She announces a terrifying future: Mother is about to die, and this will lead to the end of the human race. To prevent this, the entire crew of the Edens Zero decides to embark on a one-way journey to the last world, 'Universe Zero.' The story picks up where it all began, in Granbell. Shiki and Rebecca, and then Happy—it's time for a reunion! A new start for an adventure that must allow them to save the world!