Delivering Packages Unlocked the Secrets of the Supernatural World

Yi Hang is a courier with supernatural abilities.

He delivers a fake luxury item, and right before his eyes, the recipient is swallowed by a black vortex.

All that's left at the scene is a button-sized transmitter and a hand signal for "six."

The police suspect him, his company fires him, but then he receives a letter from the deceased:

"Find that library and destroy every book of dark supernatural arts."

The Dongxu Association points him toward one path: become a special agent.

But he doesn't know that his own origins share the same root as those sealed dark abilities.

He also doesn't know that his father's disappearance is connected to all this.

Only a garbled message that no one can decipher remains in his wristband.

Some answers have been buried for a lifetime. It's time someone went looking.