The Overdue plugin helps users track and manage unfinished tasks with due dates in Obsidian. It automatically marks checkbox tasks as [[Overdue]] if they remain incomplete past their due date, making it easy to identify pending tasks. The plugin updates notes automatically just after midnight but can also be triggered manually via the command palette. By referencing the [[Overdue]] tag, users can view all overdue tasks in one location using Obsidian's backlink feature. This plugin streamlines task management and ensures that missed deadlines are clearly visible, allowing for better prioritization and follow-up on unfinished work. It only adds the [[Overdue]] marker and never removes it, allowing users to maintain manual control over task updates.