'My brother was a very private person" "because he wanted to be? Or because you never talked to him?" Jan and Hopi were inseparable, they were best friends since birth. At least, that's what everyone thought. After Hopi's disappearance Jan meets an odd young man on the train named Fritz and the two become unlikely friends as he shows her what life holds beyond her brother. Through Fritz's million questions and Hopi's newly surfaced diary, Jan realizes that she may have not known her brother at all.