[In the Eternal Night Era, fireflies are the only light for human beings.
After the solar storm, the earth fell into eternal night, and in the darkness of minus 40 degrees Celsius, human beings survived by relying on "light cores" - the luminous crystals left after the fireflies were drained.
Lu Ye is a wandering hunter who walks alone and never asks his employer's purpose. Until he takes a strange escort: a blind girl, who is going to the "City of Light" thousands of miles away.
The girl's name is Xiaoying. She can't see light, but she can "sing" fireflies.
When walking through the ruins, the insect swarm protected her from the wind; when encountering night bandits, the insect swarm fought for her. Lu Ye discovered that this thin girl concealed the deepest secret of the entire Evernight World - everyone was looking for her, some wanted her life, some wanted her light.
And the legendary city of eternal light is opening its huge mouth, waiting to swallow her "Firefly Heart".
Lu Ye only believes in one thing in his life: just live. But this girl who called him "Daddy" made him want to ignite himself for the first time——
"Don't be afraid, daddy will light a lamp for you that will never go out."
We are not heroes, we just don't want to let go.
