马季（马国明 饰）多次与死亡擦身而过，一次意外唤醒了沉睡百年的石精灵石敢当，从此打开了天眼，看到凡人看不见的「东西」。一次在石敢当（胡鸿钧 饰）决战邪魔之际，马季意外吸走石敢当的灵力，从此马季成为降魔大师。 的士司机马季为人豁达乐天，有次人有三急在草丛小解，意外唤醒「石精灵」石敢当，从此能够看见灵魂。后来，马季认识了灵异节目主持贝贝娜，一同展开寻妖降魔之旅。贝娜渐对马季生情，然而马季原来一直暗恋医生乘客庄芝若。其时，邪魔为祸世界，石敢当与之决战时，竟法力全失，此时马季居然爆发出惊人灵力。
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?
