The story is set in Nebrask (內布拉斯卡), American Isles (合眾島). People here are threatened by wild chalkling, and there are few rithmatists responsible for defending. Rithmatists have powerful skills that they could use chalks drawing different patterns to defend or attack. How well and standard the patterns decide their power. Also, there is a college professionally teaching Rithamatic (陣學).
Joel is a young man in the college who is addicted to Rithamatic, but he isn't born as a Rithamatist, which means the patterns he drew isn't work. However, he has talent to draw the patterns well. Melody is his good friend as well as a rithma
tist. One day, the students in the college are disappearing one after another, no one knows where are they or whether they are still alive or not. Joel and Melody find something strange, could they follow the cues to find out the answer? Who is the plotter behind the scheme?
At last, I want to share a song, The Hanging Tree. It's a sound track from The Hunger Games movie. The lyrics are very simple, but I was touched by it in the theater.
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