A young man moves into a run-down apartment building and soon gets into a relationship with a neighbor. Both the characters and the building have traumatic histories, and over time the ghosts of their past come to light.

尚真（韩石圭 饰）曾经是小有名气的声乐家，如今，渐渐落魄的他沦为高中音乐教师，在地处偏远的学校里过着心中充满了压抑和憋屈的日子。张浩（李帝勋 饰）无论是外表或内心，都是一个实打实的小混混，比起伦理道德，他更愿意用拳头来讲道理，尽管拳艺不精的他经常会把自己弄得遍体鳞伤，但他喜欢这种自由肆意的生活。 一个是高中老师，一个是街头流氓，就是这样个性和人生经历迥然不同的两人，他们竟然在阴差阳错之中被凑在了一起。随着时间的流逝，尚真发现张浩拥有着杰出的声乐天赋，而张浩在全新的生活中亦寻找到了人生的意义，友情和亲情在最初水火不容的师徒之间逐渐产生。

A man suffers from mental illness after having lived with a mother suffering from dementia and a brother addicted to gambling. Now institutionalized, he falls in love with a nurse at the psychiatric hospital.