Watch Online Free on Watchseries. In the Syrian mountains of Al Ghalamoun, overlooking the vast desert, stands the ancient Christian monastery of Mar Musa—a beacon of interfaith dialogue and radical hospitality in a fractured land. The film follows the monks and nuns through intimate, observational storytelling as they navigate postwar devastation—working towards peace, even in the face of grave personal loss. Poetic imagery and an hypnotic score accompany "Mar Musa" emerging as a profound metaphor for Syria itself.