Humanity is gone.

Standing alone in the ruins of Earth, one desperate survivor injects every experimental vaccine left behind, fully expecting to die.

Instead, he wakes up as Haneul—a mysterious ten-year-old girl who may no longer be entirely human.

Accompanied by a sharp-tongued AI and an engineer android with far too much patience, Haneul travels across a silent world searching for answers while sending Morse code messages into the past, hoping someone in 2028 can stop history from repeating itself.

Saving humanity is difficult.

Explaining why the last survivor is now an adorable little girl might be even harder.