Euclidean

A hidden mystery in Jupiter's second-largest moon holds a power beyond imagining.

Beneath the icy surface of Callisto lies an underground sea. Decades from now, a research base is built to study the strange lifeforms inhabiting this silent world before tragedy struck, killing everyone in it. News of this incident is quickly hushed up, and all access to the Galilean moon restricted.

Kirill Sereda became orphaned when his mother went missing at that very outpost. Now an adult, he gathers together a team of misfits for a clandestine mission: head to Callisto and find out what really happened.

What they uncover is a profound enigma that sheds light on humanity's true origins, and its revelation could bring about our ultimate extinction.