A bold proposition for the Staircase Project puts the group at odds. Will weighs his options. Ye returns to a familiar place.

Jin seeks justice after a death rattles the group. Investigators learn of an extremist group devoted to an otherworldly entity ahead of a major summit.

Auggie’s countdown jeopardizes her nanotech work. Jin becomes engrossed in an otherworldly VR game. Ye Wenjie follows through on a radical idea.

Unsettling events put a group of brilliant friends on edge as a mystery unravels with origins tracing back to China during the Cultural Revolution.