Set in the apocalyptic wasteland, it tells the story of human struggle and survival on the floating fortress "Lighthouse". As members of the hunter team, Chen Mo and Lin Lan face the threat of the aberrant creatures on the ground called the "Emperor Beast" every day, and struggle to survive under the strict hierarchy and breeding rules - the superior people control the resources, the ordinary people live at the bottom, love is taboo, and the rules of survival are cold and bone-chilling.
After a raid by a swarm of polar beasts, the lighthouse accidentally detected a high-intensity life signal on the ground, which was suspected to be a survivor base in the old world. This discovery broke the stagnant balance and plunged Chen Mo and others into confusion: is it the remaining hope or a deeper crisis? In an apocalyptic world where resources are scarce and monsters are around, they must use fighter planes to break through the fog and explore the possibility of the continuation of human civilization in the gap between rules and human nature. Under the dim light of the lighthouse, unknown secrets and cruel reality are quietly unfolding.