在北京地铁卖唱的浪子,突然遭遇爱情和友情的双重背叛,痛不欲生。可此时,真相意外曝光:原来女友的离开是因为遭遇意外……愧疚和宽容让他重新拾起了吉他,和兄弟一起再度走进地铁卖唱。他们从地铁唱到网络,唱得观众泪流满面。此时,爱情虽然远去了,但爱心依然在流传,而他们也成为了知名的网络歌手组合“地铁兄弟”! Prodigal son singing in the Beijing Subway, suddenly suffered a double betrayal of love and friendship, love one’s life. But at this time, the accidental exposure of the truth: the original girlfriend left because of accident ... guilty and forbearance to let him pick up the guitar again, and brother once again walked into the subway to sing. They sang to the internet from the subway and sang audience tears. At this point, although love is gone, but love is still circulating, and they have become well-known network singer combination “Metro Brothers ”!