Time traitor

the long version

"Have you ever wished you could go back in time? What if you had the power to alter history, to manipulate events and make yourself rich, famous, or powerful? Kristi Connors is too miserable in the present to care about history. Shipped off to boarding school in the midst of her parents' divorce, Kristi wants nothing more than to run home and find her mom and dad together again. In hopes of being kicked out, Kristi enjoys harassing her ill-tempered history teacher, Dr. Xavier Arnold, with endless pranks. Ty Jordan just wants to be left alone. Sent to GWP after his mom's sudden death, Ty dreams of disappearing into the pages of the books he reads, far from the bullies who torment him at every turn. When the two unlikely friends find themselves in Dr. Arnold's detention dungeon, they make a startling discovery ... their teacher has invented a working time machine! The next thing they know, Kristi and Ty are jettisoned back to the Revolutionary War as part of Dr. Arnold's scheme to change history in favor of his infamous ancestor and the country's greatest traitor, General Benedict Arnold. To get home, they must thwart his mad plan while evading slave catchers, surviving battles, and serving as nurses for wounded soldiers"--