Five thousand meters beneath the sea, a red alert suddenly sounds in the "Zhongyue" laboratory. The facility is sealed off, leaving researcher Tong Xu and her team trapped with no way out. Faced with an invasion and the threat of annihilation, their only bizarre chance of survival lies in a cryogenic chamber.
She is an undocumented outsider, the unnecessary fifth member of the team. Her arms are covered in needle marks, and her unnaturally calm eyes conceal a secret no one knows.
The freezing chamber does not become her tomb. Instead, it is an entrance to an even larger prison. The next moment, they are all thrown into a world of endless instance dungeons, teeming with strange beasts and deadly dangers.
Here, every dungeon is a hunting ground, and every step is a fight for survival.
Theme: Turn your brain off.
