In top law firms, there is an internal rumor: Gu Yu, the silent intern who always works overtime until the end and is responsible for handling everyone's "mess", will help you realize a work wish as long as you sincerely say "Thank you for your hard work today. Good night" to him. Bingshan lawyer Xie Anran accidentally triggered the rules and got the coveted case source. She learned the taste after eating the marrow, and began to study the triggering mechanism of "Good Night", but found that Gu Yu's ability came at a huge cost - every time a wish was fulfilled, he would lose a memory of the wisher. When Xie Anran finally asked him to help her win a key lawsuit, Gu Yu completely forgot about her. At this time, Xie Anran found that she had already fallen in love with him. Should you use the rules to achieve your goals, or fight against the rules to save your lover?