Roh Yesol, a highschooler and a chess champion who finds that her sister who was the only one alongside her has committed suicide. Yesol doesn't believe it and transfers to her sister's school to find the truth, but she finds something that she had never expected What did she find? Will she be able to find the truth? Or will she end up like her sister? So many questions, but only one way to find the answer Hope you enjoy !