7 huge caves suddenly appeared in Japan.It took more than three years to conduct various investigations, but still nothing is known about the truth of the cave.Soon, the investigation was stopped and restrictions on access to the cave were lifted.Many people have entered the cave, but no one has come back so far.As a result, there appeared a person who regarded the cave as a god and shouted that "there is salvation in the cave". This person's name was Ozawa (Shinichi Tsutsumi).

December 1st.In the resort, 8 men and women gathered together.They are believers of the group headed by Ozawa.According to the rules stated by Ozawa, before entering the cave, everyone must state their reasons and record them.

The scheduled time of entry into the cave will determine the order in which they speak.The first one was Kawabata (Nakagawa Taishi) who entered the cave on December 6.Okamoto (Masataka Kubota) recorded Kawabata's story, and six people including Sugaya (Shota Sometani) also listened.Kawabata started from his elementary school days.

He was incapable of anger as a child and grew up in a state of being unable to get angry.“That's when the hole appeared.”The end of Kawabata’s story is——!

Rare performance design x luxurious cast description, a play that no one has ever seen, opening!