影片叙述始于上个世纪50年代，广州粤剧伶人携着“普长春班”远渡南洋，扎根马来西亚，在戏班的兴衰、娘惹后裔的家族憾事以及拿督公的乡野传说中，贯穿国家独立的风云动荡，承载半个世纪的景况百味，构筑出了一个属于马来西亚本土华人的草根故事。

新加坡海岸线上的填海工地，工人王必成失踪了。两名警探闻风而至，在工地周围四处探询王必成的踪影。躁郁的氛围、失眠的夜晚，警探在梦里见到王必成身影，而令人不安的真相，也将在虚实难辨的湿热幻境中揭开。新加坡青年导演杨修华，与资深演员宏荣、《路边野餐》女主角郭月合作，在虚实难辨的故事结构中，揭开新加坡沿海无证移工的生存困境。黑色电影的基底下，萨克斯風音乐、霓虹光线交错，切换视角的叙事方法，打造如梦似幻的空间感。故事背景极度写实，影像风格却忧郁抽离，带领观众远离对新加坡的刻板想像，在破碎消散的时间感中，探向当代新加坡的真实焦虑。

　A group of tired commuters have caught the last train home, ready to hop into their beds for the night. However, their train soon veers off-course and crashes into an abandoned tunnel. The three surviving commuters; withdrawn mother Yi Ling, her son Lucas, and student Janice, are forced to band together and survive the night, as well as avoid the mysterious monster hunting them. Yi Ling still suffers from flashbacks to the car accident that killed her husband and nearly took Lucas` life too. When Lucas is snatched away by the monster, her maternal instincts are tested, and Janice`s ideas of family are challenged as she remembers her difficult relationship with her estranged father. Back at the subway control headquarters, the engineers do their best to make sense of the situation and rescue the survivors.