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

With the world in a state of panic following a momentous declaration, Wade gathers the world’s greatest minds to prepare a defense plan.

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.

Obsessed with their virtual reality quest, Jin and Jack race to solve a complex riddle — but advancing to the next level brings harrowing consequences.

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