夜间新闻节目《新闻大门》的新闻编辑部迎来新人户山纱矢（佐佐木舞香 饰），她因祖母的喜好而误打误撞进入新闻行业。在节目改版的混乱中，遇见了志向成为记者却迷茫的入社两年目AD本桥悠介（道枝骏佑 饰），两人因一句话逐渐拉近距离，发展出“秘密关系”。与此同时，温柔体贴的同事宰善（金武俊 饰）也默默守护着纱矢。围绕三人展开的青春×梦想×悸动的职场爱情喜剧由此上演。
Big Mood is a vivacious and rebellious portrayal of female friendship when infiltrated by the complexities of a serious mental illness. The six-part series will explore the messy pitfalls and idiosyncrasies of navigating adulthood through wicked humour, daft anecdotes, and unsettling truths. Best friends Maggie and Eddie have lived in each other’s pockets for ten years, through thick, thin, and multiple challenging eyebrow trends. But with the rest of their lives looming, careers hanging in the balance, and Maggie’s bipolar disorder making an unwelcome return to form, Eddie begins to question whether this friendship is really in their best interests. It’s a pivotal point in both their lives, bringing to the surface those all-important questions – could sleeping with your former History teacher be the key to happiness? Is a basement Rat Hotel a functional alternative to pest control? How do you stop your new psychiatrist giving you worry dolls? With their twenties behind them, Maggie and Eddie’s relationship faces the future – can it survive?
