Diary of a Broken Mind dives into the labyrinth of sanity, where truth is as fragile as memory. When Lin Wen, a struggling writer, enters the eerie halls of the Third Psychiatric Hospital searching for inspiration, he finds more than just stories—he finds a conspiracy that blurs the line between reality and delusion. As patients vanish and sinister experiments come to light, Lin must unravel the mystery of Zhang Sean, a patient who claims to see the world as it truly is. But in a place where nothing is what it seems, who can Lin trust when even his own mind begins to betray him?