Echo of Ganymede

Fifteen years ago, the transport ship “Sirius” disappeared without a trace in the asteroid belt. The reports state only one thing: an accident. But its last signal pointed somewhere else—leading to Ganymede, Jupiter’s icy moon, beneath whose shell lies an endless dark ocean.

Lina grew up without a father: he was the chief cryptographer on “Sirius.” Growing up, she herself became a communications specialist and receives an assignment to the “Medusa” station lowered into those same waters where her father might have vanished. For her, it’s not just a contract— it’s her chance at last to understand what happened.

But the answers she finds are far more terrifying than the unknown.

Deep in Ganymede’s ocean, there is a foreign mind—a single consciousness that considers a human personality an error that must be corrected. Fifteen years ago, the algorithm her father created accidentally became a bridge between worlds. Now this bridge is active again—and someone is already crossing it.