A death on the lunar colony of Moonhaven threatens humanity's final chance. While conducting a standard cargo run to the Moon, pilot Bella Sway becomes entangled in the investigation led by Detective Paul Sarno.

A longing for Earth tugged at Bella, yet she was held in place, bound by a delay. The resolution of a complicated matter rested with Paul and Arlo, a knot they needed to unravel before she could return.

Indira strives to restore The Bridge to its former course, while Bella assists Paul in unraveling a hidden conspiracy.

Standing at the threshold of the bridge, Paul braced himself for a series of painful farewells.

Paul and Bella ventured into uncharted lands, their purpose to find Maite. Meanwhile, Arlo embarked on a journey of his own.

Truelune faces a trial unlike any it has known.