讲述因为某个人被强制涉毒的缉毒刑警，为了追踪留下50亿保险金后离去的高中同学的死亡而显露出来的朋友之间变质友情的犯罪搜查惊悚故事。 池晟饰演冷静又缜密性格的重案组张在京，他是因为高中同学选择死亡后得到50亿保险金的人物。在警局备受尊敬，和友情、工作、家人都保持距离，必须守护原则的信念。 田美都饰演被不当解雇后回到故乡的寒酸新闻公司经济部长吴允真，丈夫和子女移民海外她独自寄生活费的刹那，听到高中同学死亡剩下50亿保险金的消息之后，展现友情素面。自我主张很强，勇往直前，决心成为垃圾记者。
金仁河（李秉宪 饰）从小就过着漂泊不定朝不保夕的动荡生活，他所结识的朋友，不是社会地位底下的小混混就是为人所不齿的卖身女，然而，金仁河本性善良又讲义气，深得朋友们的喜爱和信赖。一场意外中，金仁河锒铛入狱，在狱中，他不改本性，又结交了一群生死相依的朋友们。 出狱后，想要金盆洗手的金仁河却被迫重新坐上的赌桌，尽管赢得了赌局，却也弄得身败名裂，不得不隐姓埋名，东躲西藏。之后，金仁河被黑手党老大看重，加入了黑道，过了一段腥风血雨的日子。离开了黑道，金仁河重新回到了赌坛，这一次，他潜心深造，闭关修炼，终于成为了一代赌圣，而他和青梅竹马秀娟（宋慧乔 饰）之间的恋情，亦在风雨飘摇之中修成了正果。
When high school teacher Na Aejoon shows up for work on an ordinary day, he never expects to bump into his favorite celebrity in the hallway. But when his school becomes a filming location for a show starring Choi Siyeol, his bias from the idol group A-One, that's exactly what happens! If that's not enough to give a fanboy a heart attack, Siyeol takes an interest in Aejoon and asks him to join the show as his "co-teacher." Desperate to keep his fan life a secret, Aejoon is forced to put his acting skills to the test, and not just on camera. But as he spends more and more time with Siyeol, the deception becomes harder to keep up. Not to mention, he might not be the only one keeping secrets…
