This study explored the effects of implementing collaborative Digital Storytelling (DST) on the writing proficiency of junior high school learners in Indonesia, this study focused on Tompkins et al.'s (1984) five stages of writing process: prewriting, drafting, revising, editing, and publishing. The main issue identified was students’ challenges in writing, especially when dealing with English as a Foreign Language (EFL), requiring innovative pedagogy. Objectives included analyzing improvements in writing proficiency, group collaboration dynamics, and pedagogical implications under the Merdeka Curriculum. A qualitative case study design was employed. Findings revealed that DST significantly enhanced student engagement, creativity, and writing skills across stages, with 75% of students improving from "Low" to "High" levels. Tools like Canva and CapCut made the process student-centered. In conclusion, collaborative DST offers a valuable strategy for improving writing instruction, integrating into curricula to foster 21st-century skills and address cultural barriers in Indonesian EFL settings, contributing to Merdeka Belajar reforms.