Hsiu-Yun and her son Ming-Chung are owners of a performance troupe. During a performance, her daughter-in-law runs away, resulting in the troupe’s disbandment. Ming-Chung is unable to pay the hefty loan and insurance expenses, but he gets an idea when he learns from his old classmate that people with mental disorders can collect health insurance. Ming-Chung persuades Hsiu-Yun to fake mental illness and claim insurance money. They succeed several times, until the classmate threatens Ming-Chung for a share of the loot. Out of fear, the family panics and second-guesses one another. What started as an insurance scam plunges the family into a state of fear and murderous illusions.