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

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

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

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

As threat levels rise, a secret mission to retrieve enemy intel ventures into dangerous territory. An ominous message reaches Earth.

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

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

A high-level operation upends Saul's life. With emotions and expectations high, the probe launches into space as humanity enters a daunting new era.