After getting terminated by her boss and best friend, Shoko has nothing left to do but go home. But how strange it is that, of all times, a memory reawakens when she spots a crumpled piece of paper on the floor. Arcadamia, a hazy memory, a videogame that began all her love for detective work. Yet, had she known it was a gateway into the digital world of Arcadamia, she might never have picked it up in the first place. Now, within the radius of quests, unique characters, and worlds she’d never imagined, Shoko finds herself in the thick of the current case of The Notewriter, an enigmatic murderer leaping from world to world, victim to victim, leaving distortion with no bounds. After meeting detective Yena, head of N0V4 Corp, Shoko learns that justice can still be restored, even in a world that isn't hers. And when Yena discovers the game’s ultimate secret, that Arcadamia itself is a game, she can't help but yearn for answers from the Notewriter themself. In a world as intricate as Arcadamia, can ex-detective Shoko and detective Yena uncover the truth of the Notewriter, while Shoko struggles to find her way back home?