Write a short story (approx. 800 words) that utilizes a non-linear timeline. The narrative should switch between three distinct time periods: the distant past, the immediate past, and the present. Crucially, you must alter the syntax and sentence structure of each section to reflect the era without explicitly stating the date. For example, the past may use antiquated, flowery sentence structures, while the present is fragmented and fast-paced. The plot threads must converge seamlessly in the final paragraph.