Mari, a girl, is passing the night in an inconspicuous Denny's when she encounters a young man who claims to know her elder sister, sending her on an expedition around the sleeping city. In a world poised between imagination and reality, the lives of a diverse cast of Tokyo residents—models, prostitutes, mobsters, and musicians—collide in a single night. After Dark is a gripping story of the mystical hours between midnight and dawn, utterly enthralling and laced with weirdness.