In 2109, humanity encountered extraterrestrial life beyond the solar system for the first time.
In 2371, the Gauna ship, which had not responded to humanity's calls since their first encounter, suddenly approached the solar system and dropped 46 Gauna onto Earth.
The Gauna first landed in the ocean and preyed on vast numbers of marine creatures. Thus began humanity's war against the Gauna.
On August 2, 2384, the Sidonia set sail.
After the Gauna invasion, hundreds of seed ships, both crewed and uncrewed, successfully escaped the solar system.
In the Sidonia era, Year 1009, or Common Era 3394, the ship has yet to make contact with any other seed ships.
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