Grounded within literature pointing to the value of narrative in communicating scientific information, the purpose of this study was to examine the use of stories as a tool for teaching about natural selection in the context of school science. The study utilizes a mixed method, case study approach which focuses on the design, implementation, and evaluation of narrative-based curriculum materials. The data consisted of questionnaires, classroom observations, and interviews with the students and teachers. The analysis of the data showed that most of the students developed adequate scientific understandings about natural selection and they perceived the narrative as easier to comprehend than the textbook. The findings speak to the need for examining ways of blending narrative effectively into science lessons.