Introduction: Due to the heterogeneity in language trajectories and differences in language exposure, a lot of bilingual children could use extra support for the acquisition of the school language to reduce the risk of language problems and learning difficulties. Enhancing bilingual children's narrative abilities in the school language could be an efficient approach to ameliorate the general school language abilities as well. Therefore, this study aimed to investigate whether a narrative intervention could improve both general and narrative school language abilities of typically developing bilingual (Turkish-Dutch) children. Methods: Nineteen Turkish-Dutch bilingual children (6 - 9.9 years) were enrolled in this single-arm early efficacy study. The intervention procedure was administered in the school language (Dutch) and based on a test-teach-retest principle with two baseline measurements. At baseline 1, the expressive, receptive and narrative language abilities were determined. The second baseline measurement consisted of a second measurement of the narrative abilities. Subsequently, a weekly one-hour group-based intervention was implemented during 10 sessions. After the intervention phase, the expressive, receptive and narrative language abilities were tested again.Results: After the intervention, the children produced significantly more story structure elements compared to both baseline measurements. No significant differences were found for microstructure narrative measures. The participants had significantly higher scores on the expressive and receptive language measurements post intervention. Discussion/Conclusion: These findings suggest that the intervention could be an efficient approach to stimulate the second language development of bilingual children.