A fiercely competitive police officer and an idealistic prosecutor, former high school classmates, reunite while investigating a nationwide serial murder case, pulling them into both a dangerous pursuit and an unresolved personal past.

《优越的一天》讲述了金融公司代理、设计师、雇凶杀人业主等3名主人公在同一个公寓里度过一天的故事。 原作中金融公司的代理角色将在电视剧中改编成消防员。