恶名昭彰的杀人重刑犯李壬曜（曾敬骅 饰），在狱中接受纪录片拍摄，尘封的创伤过往与犯案动机也随之揭开。少年时期与初恋的记忆随着真相浮现，而他埋藏的秘密也将打破一切希望，包括他再也无法拾回的爱情。

Red is unceremoniously dumped by her longtime boyfriend she had hoped to marry and quits her stable job. Pouring out her life grievances on social media, Red accidentally goes viral on Instagram.

In the 1994 post-martial law period in Taiwan, the students were in the midst of protest. Chi-wei, a female college student, joins the strike to fight for their freedom of expression. During the protest, she slowly becomes attracted to Ching, the girlfriend of the leader of the student strike.

少女小蓝在海边与足球校草叶廷骐发生了第一次，但对方却将她的私密照外流，让小蓝平凡的校园生活瞬间崩解。她搞不清喜欢与性爱的界线，并踏上了一段探索自我的旅程。

三立周五新华剧《飛魚高校生》將接檔《1989一念間》，王傳一將在劇中飾演瀟灑帥氣的CEO，和魏蔓之間有一段救命之緣。
王傳一在劇中飾演身加百億的集團總裁，多年來苦苦尋找14年前遇到的「初戀小美人魚」，而魏蔓則拜託王傳一幫自己訓練「飛魚泳隊」。