Office worker Li Xiaoxiao is diagnosed with stomach cancer. Shedding her timid persona, she begins living unapologetically – collecting debts for her parents, scolding unethical matchmakers, and confronting exploitative business partners. When her boss Qin Mingfeng discovers she's single, he pursues her relentlessly. Facing her illness, Li makes a radical decision: to embrace life as an "irresponsible 'bad girl'".