In the six-story laboratory building, an elevator door ran out of control. When Jiang Zhiang fell into the darkness, he still held a half-folded silver paper crane in his hand. The living people each kept their secrets, until the dead told them with the folds that the truth was hidden wherever they looked hard.
Intent: When gentleness becomes the silence of bystanders, ordinary people who are hunted by life join forces to push the only person who tries to protect their friends into the abyss.