Lieutenant Cora Harper joined the Systems Alliance to develop and enhance her powerful biotic talents. She was assigned to the asari commando unit Talein’s Daughters, where she honed her abilities to become a skilled and deadly huntress.
Returning to Earth, Cora finds herself a stranger among other humans, and joins the Andromeda Initiative as Alec Ryder’s second-in-command. The mission will send 100,000 colonists on a one-way, 600-year-long journey into the unknown. When essential—and dangerous—tech is stolen, Cora is assigned to recover it before it can be used against the Initiative, and end the mission before it can begin.
The Quarian ark Keelah Si’yah sails toward the Andromeda galaxy, carrying 20,000 colonists from sundry races including the drell, the elcor, and the batarians. Thirty years from their destination, a routine check reveals drell lying dead in their pods, and a deadly pathogen on board. Soon, the disease is jumping species, and it quickly becomes clear that this is no accident. It’s murder, and the perpetrator is still on board.
The ship’s systems rapidly degrade, and panic spreads among the colonists, for the virus yields a terrible swelling of the brain that causes madness, hallucinations, and dreadful violence. If the ship’s crew can’t restore their technology and find a cure, the Keelah Si’yah will never make it to the Nexus.