该剧改编自姜草的同名漫画。从小就能飘浮空中的金奉皙（李正河 饰）为了不让人发现自己的特殊能力，总是背着沉重的书包去上学。某天，他认识了转学生张喜秀（高允贞 饰），两人在互相交换秘密后，很快变成了好朋友，但他们也日渐发觉自己就读的高中有些不寻常。学校里，似乎有很多学生隐藏了自己的超能力，而他们的父母好像也有什么不可告人的秘密。 与此同时，韩国首尔市中心发生了一些离奇谋杀案。为守护心爱的人，一直躲在人群中的超能力者决定挺身而出，正视即将逼近的危险。
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…
