There is an urban legend circulating in Asia that "if you make a wish to 'Chopsticks Deity', it will come true"!

In a secret sacrificial ceremony, a mysterious man with a red fish-shaped birthmark – who wants to stop the urban legend - successfully summons the ancient participants. But participants from countries such as Taiwan, Japan and South Korea described several types of sacrifice. The man seems quite confused, but a female academic pointed out that there are commonalities among these types, such as the fact that the participants were always eight, had fish-shaped birthmarks on their bodies, and woke up trapped in a certain school classroom.

All clues point to an elementary school that has sunk to the bottom of the reservoir.

The man decides to find out what conspiracy is behind all of this!