Eun-ho, a free-spirited gumiho, avoids good deeds and romance to steer clear of becoming human. Her carefree life takes an unexpected turn after a fateful encounter with a self-absorbed soccer star.

Little Seung-jae stays up all night and writes letters to So-hee, pretending to be her father in Mars. Leaving Seung-jae's innocent heart behind, So-hee leaves for a big city. Both grown up to be adults, Seung-jae is a postman who writes letters to So-hee's grandma - the letters that never came from So-hee. So-hee's heart hardens after hardships in life and she comes back to her hometown and Seung-jae's heart swells up again at seeing her again...

As events unfold, Cha Se-eum, an acclaimed female conductor who stands out among the mere 5% of women conductors globally, endeavors to reveal the truth surrounding the orchestra while safeguarding her own undisclosed secrets.

On a snowy night, little Seon-mi is diagnosed with hemopoietic dysplasia. Years pass and Seon-mi, who has now become an adult, has overcome her pain and is adjusting to the adult world. Having decided to use her talent to become a perfumer, she travels to many different places to collect various scents and spices to help people with their inner pains. She meets Sang-woo at an aquarium and is strongly drawn to his scent which reminds her of her father.

A young woman with a miserable life receives a magical book that gives her the power to make every man she encounters fall for her.

1979年，尹小恩（金荷娜 饰）是新罗大学英语系三年级的学生，她一直暗恋着自己的前辈东熙（朴永宇 饰），她对美好生活十分憧憬，但东熙喜欢的是另一个学生。 一次偶然，小恩发现了一台老式的报话机。一天晚上报话机突然传来另一个男生的呼叫。惊讶不已的小恩开始与对方通起话来。交流之下，小恩才发现原来男生也同样就读于新罗大学，叫池仁（刘志太 饰）。两人随后相约第二天在钟塔下见面，小恩苦苦等待，但对方并没有出现。这边厢池仁在大雨中也等不到小恩的前来。晚上通过报话机交谈的时候，都互相埋怨对方。 到了第二天的晚上，他们才明白，原来他们来自不同的时空。小恩生活在1979年，池仁则是在2000年，跨越时空的交谈令彼此惊叹不已。那一晚，他们把自己的感情事都向对方倾诉了，不知不觉中，两人的感情加深了。 池仁告诉小恩，原来自己的父母也是新罗大学的学生，而且那就是东熙与东熙的恋人善美……

198。这个看上去毫不特殊的数字对于俊伍（李东旭 饰）而言，却是解密前女友离去的密码。曾经相爱的恋人突然离自己而去，只留下了“198页”这唯一的线索。想要破解其中奥秘的俊伍只得每天去图书馆翻找各类书籍，寻找第198页的秘密。而这怪异的行为引来了刚失恋的图书管理员恩秀（柳真 饰）的注意。起初，她只觉得俊伍是个怪人，但当她知道事情的缘由后，她开始自告奋勇的帮起俊伍一起寻找198页。在寻找的过程中，二人又回到了各自甜蜜的往昔，可越是甜蜜的回忆，越是萧瑟的当下。 随着俊伍和恩秀接触的深入，二人开始被对方所吸引，那份失去爱人的心似乎又开始激烈跳动起来，再次为一个人所心动……

李承龙（车太贤 Tae-hyun Cha 饰）因为童年一场意外让他的智商只停留在了儿童时期，无论快乐还是悲伤都有着傻瓜一样的笑容。父母离世后靠着三明治店的收入来养活照顾妹妹智仁（崔雪莉 Sulli 饰），每晚唱着《小星星》想着妈妈，盼望着童年暗恋的对象芝浩（河智苑 Ji-won Ha 饰）归来。某天承龙在路上一眼认出了留学十年刚刚回国的芝浩。随着两人相处日子的增多，芝浩对承龙儿时的记忆被渐渐被唤起，在承龙的鼓励下对钢琴的信心也渐渐恢复。就在芝浩，妹妹智仁和玩伴相洙（李己雨 Ki-woo Lee 饰）这三个承龙最爱的人都陪伴在自己身边的时候，妹妹的意外病倒让幸福的故事开始发生了转折… 该片改编自韩国著名网络漫画家姜道英的同名漫画《傻瓜》。