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The story
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Marvin Washington comes to Whit for help with a school speech about the American Revolution and discovers the rebuilt Imagination Station. Whit’s new model can carry as many as ten people and includes stronger physical effects, along with a scanning chamber that can turn a book, painting, movie, or other source into an adventure. He hopes to unveil it during the school’s American Revolution Week, but Marvin is one of the first children allowed to see it.
Marvin has little interest in the assignment. Paintings of Washington crossing the Delaware and the Battle of Bunker Hill appear to show only white people, while the history of Black Americans he has learned has centered on slavery. He does not believe the Revolution’s heroes and patriots have anything to do with his own people. Whit invites him to test the new machine and look more closely.
The Imagination Station places Marvin in Lexington, Massachusetts, early on April 19, 1775. He meets William Diamond, a young drummer among the Minutemen. William mistakes Marvin for another drummer and welcomes him as a soldier. He also introduces Caesar Bason, a Black man whom Marvin immediately assumes must be enslaved. William does not think so, but Marvin remains puzzled.
Inside Buckman Tavern, Captain Parker warns the gathered militia that British regulars are approaching Concord to seize their cannon. Some men want to attack, but the group has voted not to interfere. Parker dismisses them to their homes with orders to listen for William’s drum if they are needed. Marvin begins sharing drum patterns with William and finds the past more interesting than he expected.
Soon a sentry reports that the British are only half a mile away. William sounds the call to arms, and about seventy Minutemen gather on Lexington Green against roughly seven hundred soldiers. Marvin notices another Black Minuteman, Prince Easterbrooks, standing in formation. Caesar also takes his place and firmly corrects Marvin’s assumption: he is not a slave but a soldier.
Captain Parker orders the men to hold their ground and not fire unless fired upon. William expects the regulars to continue down the road, but he tells Marvin to hide in a fish barrel for safety. British officers discover him there and briefly lift him out, laughing at the frightened young rebel before dropping him back inside.
Major John Pitcairn orders the militia to lay down its weapons and disperse. Parker begins sending his men away without surrendering their arms. Then a shot rings out from an uncertain source, and firing erupts across the green despite Pitcairn’s orders to cease. The British march away after the violence. Eight colonists have died and ten are wounded, including Prince. William is devastated to learn that his friend Isaac has been killed. Caesar asks Marvin to help care for the wounded and recognizes that they may have witnessed the beginning of a war.
The Imagination Station moves Marvin forward to the evening of June 16. He rejoins William and Caesar on the road between Lexington and Boston. The militia has fought the returning British forces and now has them confined in Boston. William and Caesar are traveling to join a secret operation rumored to concern Breed’s Hill or Bunker Hill, and Marvin marches with them.
Around the campfire, Marvin again asks whether Black men truly belong in this struggle. Caesar explains that he has the same right and responsibility as any other man to defend his home, town, and land. He tells Marvin that Crispus Attucks, a Black man, shed the first blood for their cause in the Boston Massacre and reminds him that Prince stood beside white neighbors at Lexington. Their skin may differ, but their blood is the same color when they fight together.
After a long march, they reach Bunker Hill and report to Captain Smith. Under cover of darkness, the soldiers must build an earthen fort before dawn and prepare to resist the British. William is sent into town for food and leaves his drum in Marvin’s care. Caesar hands Marvin a shovel and tells him to start digging. The hungry, footsore boy has little time to complain: another battle is about to begin.

