The History Today plugin brings historical context to your notes by displaying significant events that happened on the current date in history. With customizable settings, users can filter which folders the plugin scans, ensuring relevant results tailored to their organization. The plugin leverages metadata fields such as date created or ctime to determine the appropriate historical connections. A convenient icon in the sidebar provides easy access to the historical events of the day, making it a valuable tool for learning or adding perspective to daily note-taking.