Lin Ye, an intern who was wrongly convicted of a bizarre murder case, was forced to undergo supervision at Binhai Mental Hospital. While working the night shift, he accidentally discovered that the seventh secret college in China was hidden under the inpatient building. The night watchman with the bloodline of the ancient candle dragon, the iceberg school beauty holding a talisman sword, the crazy genius wearing electronic shackles... When the bloody moon hangs in the sky, the countdown to the thousand-year curse begins to turn. Traveling between reality and the other world, Lin Ye gradually revealed the shocking secret of his life experience - he was actually the "Key to the Door" chosen by the ancient gods.
