Highland Tower: In December 1993, a luxury condominium tower block collapse after ground erosion from the neighbouring hillside. About 50 people lost their lives and to this day has become one of the darkest and saddest tragic incidents in Malaysian history. Twenty years later in 2013, a group of documentary filmmakers venture into the remaining two blocks that is left standing to do a ghost hunting expedition. What they discovered is not for the faint-hearted.