Rookie cop Lin Kangwei is assigned to watch the betel nut stalls. After observing the betel nut beauties for quite some time, he starts to sympathize and go easy on them. Due to the nature of his job, he forms a close bond with Hsu Li-Chen. Soon, they become the talk among neighbors and relatives. Hsu Li-Chen is a tough cookie out in the world on her own. She struggles to make ends meet when her father runs away and leaves her with a huge amount of debt. By day, she is a plain woman but by night, she transforms into a sexy betel nut beauty.