Someone is out to stop the GSS Intrepid, an interstellar colony ship, from being completed on schedule and beginning its journey to 82 Eridani. When anti-colonial activist groups are suspected, Major Tanis Richards, an officer in the field of military intelligence and counterinsurgency, is brought onboard to hunt them down.

A public disgrace Tanis suffered at the hands of the military has motivated her to leave Sol and start a new life elsewhere. She soon discerns that more than simple activist groups are arrayed against the ship and its crew. There are corporations and governments that have a vested interest in ensuring that the Intrepid never leaves the Sol system.

Tanis tightens security and fights political red tape while running up against assassins and mercenaries sent to the stop her and the Intrepid at every turn. The new friends and relationships she forges strengthen her resolve to protect the ship and keep its crew and colonists safe as they endeavor to head outsystem.