此劇講述偶然地目擊到殺手事件現場並逃離現場的過程，但卻因事故失去記憶，忘記自己是誰，當看到自己手上的日記有著殺人過程的詳細資料，以為自己是變態連續殺人犯的故事。

職場中聰明伶俐的職場新人李淺（金雯昕飾），碰到了職場的腹黑老狐狸寧成明（季肖冰飾），兩人互相看不順眼，李淺本以為會有一場激烈的爭鬥，但沒想到一場車禍，使得老狐狸寧成明失憶了，兩人意外成為了名義上的情侶，並展開同居生活。而在相處的過程中，兩人逐漸發現了對方的優點，李淺本想着惡作劇，卻有點猶豫，最後二人逐漸陷入了甜蜜的愛河。

Shan Junhao is the CEO of Senwell. He's a hard-hitting leader who never takes half measures to achieve what he wants. He's encounter with Ye Qianyu is not a pleasant one as he has mandated the closure of the Guanmei Inn, a place that Ye Qianyu holds dear. When Shan Junhao gets into an accident and wakes up with no memories of the past, Ye Qianyu takes him in and gives him a fake identity. They grow closer through their time together even though she knows that one day, he is bound to leave.

A romance between a narcissistic young master who loves no one but himself and his witty maid who has worked for him for years. When the heart beckons, what ensues is a sweet and hilarious story of pursuit. The young master of Qianyun manor, Mu Juechen is a leader among men. Not only does he have extraordinary talents but he also possesses a chivalrous heart. Through his efforts, the pugilistic world lives in harmony and he is hailed a hero. In his own eyes, he regards himself as the most perfect man.