Office worker Truly Lin goes on a journey through her memories. 20 years ago, she had a crush on the most popular guy in school. Taiyu, a ruffian and a bully, is in love with the campus belle. Truly teams up with Taiyu to tear the golden couple apart and help each other to get the ones they love.

When 17-year-old Makoto Konno gains the ability to, quite literally, "leap" backwards through time, she immediately sets about improving her grades and preventing personal mishaps. However, she soon realises that changing the past isn't as simple as it seems, and eventually, will have to rely on her new powers to shape the future of herself and her friends.

嘉恩（任容萱 饰）和人维（是元介 饰）是从小玩到大的青梅竹马的好友，两人双双参加了大学联考，让嘉恩没有想到的是，虽然自己的成绩一直都比人维好，但人维考上了心仪的大学，而自己却落榜了。送走了人维后，感到无依无靠的嘉恩决定前往台北，在那里开始新的人生。
因为父母外出有事，嘉恩决定去城东大学投奔人维，哪知道人维久久没有现身，倒是在球场上，嘉恩结识了校园里的明星人物流川（李国毅 饰）。在误打误撞之中，流川和嘉恩之间有了三番五次的接触，内心的悸动让嘉恩不得不开始正视心中对流川的感情，亦使她开始反思自己和人维的未来。

Three moments in Takaki's life: his relationship with Akari and their forced separation; his friendship with Kanae, who is secretly in love with him; the demands and disappointments of adulthood, an unhappy life in a cold city.

一场看似荒谬的报复性上床行动，让失恋的唐家妮（林心如饰）遇上了 方韦德（杨一展饰）。原该一夜结束的夏日荒唐，却让她碰上了她的真正“初恋”。然而一切像是梦一场。1999年，台湾史上最强大的921大地震，震醒了唐家妮的美梦，多年来陪伴在她身边的汪俊杰（谢佳见饰），在这场“震 撼”中，注定为她瘸了双脚。 唐家妮义无反顾的陪伴着他，两人结婚，也走上了平淡却踏实过著小夫妻生活。
2008年，她和方韦德意外再相遇，他们知道彼此都还惦记对方，但她有婚姻，他也即将步入礼堂，不过两人还是选择维持着好友的关系。然而，这一次和韦德的重逢，却对家妮、俊杰及好友瑞瑞（许玮甯饰）都产生了不小的影响，所以，终究，韦德和家妮还是选择说了再见…
2013年，一场好友的婚礼，两人命运的红线再度拉上，这次，等待他们的会是什么？