1. Episode 1

As the hiking club reunion gets underway, a text message from the mysteriously absent host Xinyi breaks the awkward atmosphere.

2. Episode 2

With no way to escape or communicate with the outside world, the group is forced to fend for itself and deal with an explosive secret.

3. Episode 3

As yet another victim falls, Awei reveals a shocking bit of news that may shed light on the incident from a decade ago.

4. Episode 4

The remaining vacationers wake to discover their circumstances have dramatically changed. Later, the group makes a discovery.

5. Episode 5

As another body emerges, everyone begins to point fingers at one another. Later, the official investigation begins.

6. Episode 6

While Yazheng analyzes each person's testimony, clues -- and a theory -- gradually begin to emerge

7. Episode 7

Secrets are revealed and confrontations abound as the truth behind the deadly game finally begins to come into focus.