讲述了不善良的妈妈、女儿和孙女三代女人在生活中经历各种挫折，寻找爱情和幸福的家庭成长的故事
《别放精神线》是连载10年间点击率达到20亿次的网络漫画，是一部获得罕见点击率和接近满分的Naver人气网络漫画。在"放下精神"的家人展开的日常故事中，通过诱发笑声的网络漫画受到读者喜爱。李镇赫在《别放精神线》中饰演郑科长的儿子兼尚德大学电子物理系大学生郑信(发音同“精神”)。
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…
一事无成、生活惨淡的女子深信她已失去所有热情，直到年轻且朝气蓬勃的自己有天出现在眼前，要她做出改变。
金明民饰演的姜健宇，被称为Maestro姜（姜指），42岁，是一位在欧洲声名鹊起的指挥家。他虽然成就非凡，但为人毫不圆滑，尖刻毒舌、蛮横孤傲、咄咄逼人、固执己见。他要求极为严格，一旦达不到要求的演奏家，他就毫不客气地发挥毒舌功力，骂的对方体无完肤。这样的性格使和他一同 工作的人完全无法忍受，因此，他从来没在任何一家乐团做超过6个月的常任指挥，不是主动辞职，就是乐团成员受不了他而放弃。他的外号“交响乐团杀手”也由此产生。 然而，就是这样一个连顶尖乐团的优秀演奏家都深感敬畏的指挥家，却阴差阳错成为一个业余乐团的指挥，乐团由一群被音乐抛弃也抛弃了音乐的乌合之众组成，姜健宇不得不训练他们，并和他们一起走上音乐厅的舞台......
