The multi-layered crisis in Lebanon, characterised by an economic collapse, the influx of Syrian refugees, the COVID-19 pandemic, and the Beirut Port Blast, has significantly affected the psychosocial well-being of Syrian refugee children in Beirut. This mixed-methods longitudinal case study investigated the stress factors impacting these children and analysed their improvements in psychosocial well-being after participating in an eight-session, group-based trauma-focused psychosocial support (PSS) program.