The story set in the contemporary South Korea. Some 30 years ago, unidentified creatures appeared out of nowhere and have attacked people. They have caused massive destruction wherever they go. The monsters are called Trouble, and get the world have fallen into chaos. Along with the first appearance of the Troubles, some number of humans were born with or acquired supernatural abilities. These mutants called Trace are the only ones who can fight off the Trouble. The Trace are also considered freaks and generally shunned by the community because some of them misused the powers for their own interest. The plot revolves around two main characters. Sah Gang-kwon, a high school student born as a Trace who attempts to hide his ability. The other is Kim Yun-Seong, who acquired his Trace abilities during his early 30s. Soon after the acquision, his wife and daughter were taken away from him for experimental purposes. (Source: Wikipedia)...

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