It's Maisie's birthday and she's hoping to get equipment to build her own nuclear reactor. But the house is empty and outside is a terrifying blackness. Trapped in an ever-shifting reality, she has to rely on the laws of the universe to save herIt's Maisie's birthday and she's hoping to get equipment to build her own nuclear reactor. But the house is empty and outside is a terrifying blackness. Trapped in an ever-shifting reality, she has to rely on the laws of the universe to save her