Hao Yun is a young man whose "otherworldly" behavior gets him sent to a mental hospital by his family. People call him "Hao the Nutcase." On his first day inside, he encounters patients of all kinds: a fat guy and Old Sun arguing furiously over a bed, and a young man running all over the place with a pillow in his arms.
But beneath the peaceful surface, undercurrents are stirring. Hao Yun accidentally activates the mysterious "Mad Treasure-Hunting System," which assigns him a sensational main quest: explore the hidden ancient tomb beneath the mental hospital, claim its precious treasures, and uncover the unfathomable mystery behind the institution. The rewards are irresistible: not only can he regain his freedom, he can also gain extraordinary expertise in appraising antiques and a vast fortune.
From then on, Hao Yun's life goes completely off the rails. First, he discovers that the seemingly ordinary landscape painting on the activity room wall conceals a secret. Then, one night, he follows a cold-eyed young man and finds a shabby notebook covered in strange symbols, as well as a hidden hole glowing faintly beneath the floor tiles in an abandoned storage room.
Amid one hair-raising turn after another, Hao Yun's interactions with fellow patients like the fat guy and A Qiang provide plenty of laughs. With the System's cheat-like support, he advances step by step toward the mysterious tomb in the "abnormal" world of the mental hospital. What eerie mechanisms and traps await them? Will they find the treasure and solve the mystery? This wildly imaginative tomb-raiding adventure in a mental hospital is about to begin with a bang.