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

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

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.