Retool is a 3D hacking puzzle game set on incomplete orbital defense stations that circle around Sinai, home planet of the alien species known as Onix. After 43 years of war, the Onix triumphed and defeated the humans. The victory came at a cost of destruction to their planet and orbital stations. Instead of repairing it themselves, the Onix used their captured prisoners as slave labor to rebuild their destroyed properties, starting with the stations.
You are Maria, an engineer that was captured in the final weeks of the war. Having hacked your way out of your prison cell on a station, you must escape and return home.