Siege at the State House tells the true story of a coup that was attempted between Maine's governor and the leaders of a new political party, almost plunging the United States into its second Civil War. With the Maine State House under siege for several weeks by a confederate force, the occupation culminated in a showdown between armed rebels and Civil War hero General Joshua Chamberlain, with Chamberlain standing on the State House steps, exposing his chest, and daring any man present to settle the standoff with violence, if they dared. It was an event the war hero called "Another Roundtop."

In light of recent national events, this piece of Maine history is a timely and cautionary tale brought to life by historian Mac Smith. Elements of the story include a Christmas Day raid on Maine's weapons arsenal, missing election results, and seven jackasses.