 When Shirley's parents decide to adopt a Vietnamese baby boy as their own, Shirley is mildly happy that her parents' attention will no longer be focused upon her.When a mix up results in the possibility of having a slightly younger sister instead, Shirley becomes excited with the prospect of being able to teach and help someone learn how to speak English and help educate her about the American culture.Shirley's new younger sister, "Jackie", soon becomes devoted to Shirley.