A youth-aimed sitcom about a tennis wunderkind, Angela Doolan, the 'phenom' of the title. Fifteen years old, she has the potential to be a sports superstar but worries about losing her normality and severing her family ties. Angela's father has deserted the family, to rediscover his youth and dally with younger women, leaving her mother Dianne to raise the family and to try to keep a lid on her bitterness.