The Fantastic Order of Odd Travelers

Abigail thinks Daniel is strange when she meets him at the art museum, but she doesn't discover how strange he really is until he transports them both to 1300s France on her 13th birthday, landing them right in the middle of a war with England. To make matters worse, there's a mysterious lady in a black jumpsuit chasing after them, and she doesn't look happy. Two kids. A perilous race through time. Will history be forever changed?