Registered nurse CHAI CHUEN (Michelle Yim) is the eldest of the three Chai siblings. Her sister, CHAI SUM (Annie Liu), and brother, CHAI CHEUNG (Kwok Chun On), are gynecologist and pediatrician respectively by training. CHUEN’s husband, KOT YAT-TO (Paul Chun), is also a doctor. Together, the four run a clinic whose business every clinic wants. CHUEN and SUM have very different