李建军送外卖为生,和母亲相依为命,本来到结婚的年龄,女友家却突然要加彩礼,李建军母亲只好找亲戚东拼西凑借到,没想女方又继续刁难,要李建军向女方下跪保证,女方嫁过去后不能做家务,女方要当家做主,母亲担心李建军单身打光棍,只好让李建军做了保证。。While shooting a documentary on the suspicious disappearances within the homeless community, a filmmaker and his crew go missing while uncovering a terrifying and vicious secret below the city's surface.。