"Young Andrew Beckett hopes to be a doctor. Jack Cochrane plans to take over his father's position as militia captain of the fort. Then Paul Revere rides into town with urgent news that changes their lives forever. The Portsmouth Alarm : December 1774 is based on an actual event. On December 13, 1774, just four months before the events in Lexington and Concord, Massachusetts, Paul Revere delivered a message to the Portsmouth, New Hampshire Committee of Correspondence. The message warned of General Gage's shocking plan for the Piscataqua Region, sparking hundred in New Hampshire and Massachusetts (now Maine) to tak action."