It starts off with the main character Piper finds a strange girl named Anna. Anna was hurt when Piper found her but after a little bit she woke up. Since she woke up Piper tried to find a companion of Anna and she did and his name was doloman.
Piper didn't like how Doloman looked at Anna and how afriad Anna was of him. So they ran away to the 401 train to escape Doloman. When they got there they had to sneak in. The chief security caught them and was about to throw them out when he saw Anna with the dragonfly tattoo. Since having the tattoo meant you had the protection of the king that the train worked for, he had to put them in a VIP place on the train.
Since the train had to take a lot of stops to get cargo or drop off cargo Piper figured that Doloman could easily catch up to them. So they stopped at Tevshal to meet Raenoll which is basically a fortune teller. In that visit they confirmed that they had to go to Noveen capital of the dragonfly territories for Anna. She also said that if Piper left Anna she could die. Right when they got out side they were kidnapped by slavers.
The slavers put them into a carriage and went into the woods. A flying beast later know as Gee came and attacked the carraige. At that time Piper and Anna tried to escape but was cought and found out that Doloman was behind the kidnapping. The beast tried to rescue them but got knocked out with dust thrown by Doloman. Before Doloman could do anything though Piper hit him with the same dust and escaped.
The train had to go through cutting gap. It is a place where raiders come and try try steal the trains cargo. Piper and Anna was like part of the crew now after the kidnapping so they decided to put them on the back of the train to work with the defenses. While defending Piper got caught and Gee had to try and come to rescue her. They escaped but one of the raiders followed Gee and tried to kill him but failed.
Anna decided to go run away to Doloman so that Piper wouldn't get hurt anymore. Since she did that Anna went and tried to rescue her. When she did she had to fight Doloman and seemed like they wouldn't escape but the king's guards came. hey went to Doloman to arrest him for treason. They took Piper and Anna with them but let them go because they said that they worked for Jeyne the person in charge of the 401 train. So they started working there the place they felt like was home.