陈薇(尹馨饰)带着女儿(林采洁饰)为躲避家暴的丈夫住进有自杀胜地之称的蝴蝶大厦后怪事频传。管理员梁伯(冯淬帆饰)和顶楼的庙公山叔(蔡振南饰)不断提醒她这一层楼不太干净,如果有能力还是尽快搬走,但是经济拮据的她暂时只能栖身于此。各种三教九流的邻居、杂货铺有阴阳眼的自闭症男孩阿弟(白润音饰),还有那间被再三交代禁止靠近的613号房,一切都令陈薇感到诡异莫名。外表阳光的代班管理员小梁(曹佑宁饰)对独立坚强的陈薇照顾有加,经常借故上门帮忙维修家电,陈薇女儿看到他来也会难得露出微笑。正值鬼门开时,蝴蝶大厦内意外频传,甚至发生许多灵异事件,但老住户们似乎已经习以为常。陈薇原本是想带女儿逃离丈夫,不料却将自己卷入更大危机之中...。Bipedalism, or 'two-footed walking', is the story of a painter who grew up in an orphanage and only years later learns the circumstances of his father's disappearance and death. Childhood memories bring the main character back to the past: he buys a house in the suburbs that used to belong to his family. In the basement, he finds his father's archives and scientific research documents on the hybridization of human race with related biological species. Studying the archive material, he unexpectedly finds evidence of efforts to renew the experiments on the remaining hybrid population. The painter then becomes a researcher, and consequently a victim. The basic idea of his father's research was to change, control and influence the process of human evolution - initially connected with eugenics theories of the period before World War II, and now being placed in a context of modern 'biotechnological' expectations by his former colleagues. The main character tries to recreate and realize his father's heritage, who was forced to cooperate with state terror organizations, using the results of his secret research. In a tragic manner, this information turns into the main character's reality, at first forcing him to reappraise his father's values and later driving him to madness.
(http://www.input2002.com/en/film/24418.html)。