Based on the narrative theory, “Between Two Families" uses the film script as the writing medium, and tells the life of a boy who was born on the south bank of Tonghui River in Beijing. He has two families that are in completely different economic conditions. Within 24 hours, through the different choices and different consequences of two families facing the troubles, this story shows the theme that people are born equal but have different destinies. This thesis is divided into two parts: the fourth chapter is the specific writing content and the complete script; The first three chapters and the fifth chapter are the writer’s notes, including the complete writing ideas and the reflection of writing. For reference, the appendix contains the early story ideas, as well as the film list that provided some ideas during the creation.