A masked singer that also robs banks is interrogated, during the interrogation shows how he became who he is.。棠城医药世家向家继承人向廷东与未婚妻程澈争执中被打伤陷入昏迷。为了拯救向家，程澈找回向廷东遗落在外的神秘胞弟叶燃，让其假扮向廷东，帮自己度过难关。两人携手揪出向廷东勾结的毒烟团伙，并最终剿灭。。