The prime minister's daughter Lu Zhao and the general Gu Lin were ordered to marry. Gu Lin had a rigid and cold personality. However, Gu Lin suffered from interval amnesia due to injury, and he would forget that he was married every time he woke up. Lu Zhao felt tired from repeated trials and decided to run away from home. During the Lantern Festival, the amnesiac Gu Lin stopped Lu Zhao again and proposed to be her "good friend". Lu Zhao went along with the situation and cooperated in the acting, but unexpectedly uncovered the love that Gu Lin had hidden for many years and the diary filled with love.