The game begins in 2118 with a multi-purpose service vessel (MPSV) approaching Ymir, one of the moons of Saturn. The vessel, called Iberia, is registered to Cronus Frontier, a colony located on the moons of Saturn that was established eleven years prior by Juno Offworld Automation, a corporation working in the space industry, of which Cronus Frontier is a subsidiary. The colony consists of the outer moons of Ymir, Tarvos, Skoll, and Phoebe, Titan, and the inner moons of Tethys and Enceladus. The outer moons are mostly uninhabited mining installations on the fringes of Saturn’s orbit. Saturn’s largest moon Titan houses the majority of the colonial population along with the astrophysics, manufacturing,
particle physics, metallurgical, and administrative operations. Lastly, the inner moons of Tethys and Enceladus hold the colony’s secretive advanced research and gas mining operations, respectively. The unnamed protagonist awakes from cryostasis with neurological damage and amnesia, and is informed by Mara, a self-described
synthetic intelligence construct on the Iberia, that the vessel is now in the orbit of Ymir and has arrived to help those in the mining facility on the moon after receiving a distress signal from its staff. The distress signal stated that the autonomous operators used for mining and security purposes have malfunctioned, turned hostile, and attacked the human employees currently working inside the facility. In accordance with interplanetary treaty, the Iberia is obligated to respond to the distress signal. The protagonist is supplied with a Kodachi light gunship, a small, highly maneuverable but heavily armed spacecraft capable of navigating the mines and installations of Chronus Frontier. After the initial rescue operation at Ymir, the player quickly becomes aware of the contentious relationship between Chronus Frontier CEO Gabriel Kantor and parent company Juno Offworld. Kantor had evidently become increasingly paranoid and irritated with Juno’s interference in Chronus Frontier’s development. As a result, Kantor threatens Juno with a destructive
computer virus. In response, the Iberia receives a transmission from Juno Offworld headquarters to overload the reactor cores of all Chronus Frontier facilities, resulting in explosions that will pulverize the respective facility. Strangely, Juno does not explicitly specify to also rescue survivors. Therefore, Mara appends the secondary objective to acquire all surviving personnel who have fled to cryostasis tubes. The Iberia is also unable to establish contact with the other colonists on Titan, as communications are mysteriously garbled. At the outer moons, the player discovers that Kantor ordered a massive buildup of security-based auto-ops as well as the development of new military-grade operators, believing that the colony was under imminent threat of attack. Kantor also ordered that full radio-silence would be observed between all colony facilities, forbid evacuation of the colony, and became obsessed with the loyalty of his subordinates. Upon arriving at Titan, Mara ascertains that the Iberia’s communication with Titan was scrambled in both directions, indicating some form of sabotage aboard the Iberia. The player also continues to fail to recover from his amnesia. Regardless, the auto-ops at Titan have also become hostile and forced survivors into cryostasis. Through audio-logs of the chief Titan personnel, the player discovers that Kantor ordered each Titan operation to manufacturer an individual piece of new, exotic technology. For example, the Titan Forge would craft components for new auto-op designs, while Titan Collider would develop an immensely destructive energy weapon known as the Thunderbolt. Kantor apparently became increasingly belligerent and abusive to his engineers and scientists, demanding that they risk their lives to complete the new projects. Simultaneously, Kantor claimed to be the inventor of the new tech. At the administrative complex of Titan Harbour, the player discovers that a hydro-geologist named Harper Eames, who was working closely with Kantor on a mysterious project on Enceladus, secretly requested that a small shipment of unknown contents be transferred to the Iberia along with shuttle pilot Alex Warden shortly before it departed from the colony. After destroying the entirety of the Titan facilities, the Iberia departs for the inner moon of Tethys. En route, Mara recovers an audio-log from the chief scientist on Tethys, revealing that a crashed alien craft was discovered in the ice below the Enceladus facility. The player also discovers that Kantor was responsible for the deaths of a construction crew who also discovered the alien wreckage by sabotaging their shuttlecraft. This was in order to prevent Juno Offworld from learning about the discovery of the alien ship. The message also specifies that the alien craft had the capacity for three artificial intelligence cores called sovereigns. Kantor then aggressively utilized the capabilities of Chronus Frontier to reconstruct the alien technology, under the falsehood that he had invented it. Finally proceeding to the last-remaining base of Enceladus to confront Kantor, the Iberia receives another message from Juno Offworld Headquarters. The message commands that the Iberia stand down and return to the outer moon of Ymir. Suspicious of the orders, Mara is able to override the command and deploys the player into the Enceladus facility. The player nearly intercepts Kantor at the alien craft excavation site, but discovers that he has reconstructed an interstellar portal connecting to a different part of the galaxy. The intense gravimetric distortion from the portal destroys the Enceladus base as the player enters the portal. The player recovers an audio log from Harper Eames that confirms that Kantor is in possession of the first of three sovereign cores. Eames hid the second sovereign on board the Iberia while the third was never discovered. Kantor sadistically confesses that he used his brutal new auto-op design to kill Eames and others whom for he had no further use. On the other side of the portal, the player emerges into the interior of an alien structure of massive proportions. Now aware of the player’s presence, Kantor directly contacts the player via radio, believing him to be a pirate or operative from a competing mining corporation. After recollecting the Kodachi gunship, Kantor is able to ascertain that the amnesia-stricken pilot is in fact Alex Warden, a shuttle pilot formerly of Chronus Frontier. Kantor’s revelation is a catalyst for Warden to recall the entirety of his memories. Kantor explains that the aliens are a race of sentient machines that assimilate the consciousness of civilizations, and he believes that pursuing the alien technology will accelerate the evolution of humanity by hundreds of thousands of years. As the player pursues Kantor through the maze-like and dangerous alien structure, Kantor is evidently seized by the first sovereign and his consciousness assimilated into its own. In his final moments of lucidity, the Kantor-sovereign intelligence determines that the missing third sovereign is on the moon of Ymir. The first sovereign taunts Warden by falsely claiming that its legions have already overrun and enslaved humanity. The first sovereign also reveals that its sister core, the second sovereign, was responsible for Iberia’s redeployment to Chronus Frontier and masqueraded as Juno Offworld in order to take vengeance upon the colony. It also aborted Warden’s cryostasis diagnostics to prevent the pilot from morally objecting to the colony’s destruction. Unshaken, Warden destroys the first sovereign and finds a portal to return to Ymir, which is being utilized by the alien machines as a staging point to launch an invasion of humanity. Warden emerges on Ymir, finding it overrun with alien machines and the Iberia now in orbit. The second sovereign, still on Iberia, briefly took control of the ship and forced it to Ymir, while the third sovereign has attached itself to the still-intact reactor core of the Ymir base. Warden attacks the reactor but is unable to overload it. At this point, the game will conclude in one of two ways. If the player rescued a majority number of survivors from Chronus Frontier, they will construct a warhead and fire it from the Iberia to annihilate Ymir along with the third sovereign. The Iberia will then return to Juno Offworld headquarters, having isolated the second sovereign from its systems. If, however, the player neglected to conduct rescue efforts, Mara will be forced to crash the Iberia into the Ymir installation. The blast is not sufficient to completely destroy the sovereign, and rescue crews from Juno Offworld discover pieces of the sovereigns intact on Ymir. In this ending, Warden is also forced to undergo cryostasis once again in the Kodachi gunship, and is unable to warn the Juno crews. == Development ==