在約旦擔任戰地醫生的蕭政勳，帶著創傷回台便遭遇捷運爆案。因緣際會，蕭政勳與已分手的楊惟愉，接下康聯醫院創商小組的成立任務。沒想到爆炸案的背後牽涉龐大的利益關係，整個醫療體系都深陷其中…

康聯醫院新生代醫生熊崽，白天他是醫術高超的外科醫生，晚上就變身饒舌歌手。中生代醫生蕭政勳不僅面對熊仔的質疑與挑戰，另一方面又需要面對年輕醫療記者Zoe，對當年人球案、爆炸案的窮追不捨。在世代交替的衝撞、理解、合作中，他們終究得再次面對未解的兩難: 是要成為體制的共犯? 還是勇敢和整個世界對抗到最後?

A wounded Dr. Xiao Zheng-xun returns to Taiwan following a stint as a war zone doctor in Jordan, only to encounter a metro bomb attack. As fate would have it, Dr. Xiao is later tasked with establishing a trauma unit at Kanglian Hospital with his ex-girlfriend, Yang Wei-yu. Unexpectedly, he uncovers powerful interests lurking behind the bomb attack case, setting off a scandal that would rock the entire medical system to its core...