In the test on the 20th floor, the examinees are supposed to form teams and capture rooms. However, trust is a rare resource in a world that rewards betrayal.

Kang Horyang leaves to look for Cassano alone. Unable to abandon their teammate, Viole and the others go after him.

Viole (Bam), Khun, and Rak, who once thought each other dead, are reunited. Khun’s team makes an enemy of FUG and the Workshop, but at the suggestion of former 2nd Floor Test Admin Lero Ro, who has been secretly working to help Viole escape, they decide to leave the arena with the losers before the final begins. Reflejo uses the dying Hwaryun as a hostage to force Viole into a final confrontation.