In 2087, mankind retreated underground. The three closed cities are hostile to each other. The residents at the bottom live by the skylight simulated by the dome lights and have never seen the real sky. The Administrative Office says the ground is a deadly radioactive wasteland.
Six years ago, Su Wan's father was declared dead in an "accident", leaving only a note: Don't believe them.
For this purpose, she spent six years digging out an encryption chip from the scrap pile, traveling alone through the radiation wasteland, and sneaking into Star City—the city that claimed to take humans to Mars.
There, she met Lu Ci, the adopted son of the consul, and discovered that space immigration was a collective execution, and the launch of the spacecraft was a funeral.
But this is just the tip of the iceberg. The rulers of the three cities secretly exchanged energy and jointly guarded a bigger secret - about the ground, about the truth, and about the real reason why everyone is trapped underground.
Su Wan must make a choice: cling to the false safety of the underground cage, or smash the dome with her own hands and move towards a future she has never seen.
Reader comments
Fifteen thousand people lived underground, and the dome lights were on for thirty years, thinking they were the sun. A girl repairing machines picked up a chip at a scrapyard with her dead father's job number engraved on it. She didn't believe he was dead, she didn't believe the ground was poisonous, she didn't believe there was no sunshine in the world. She was scared to death. But she went up anyway.
Fifteen thousand people lived underground, and the dome lights were on for thirty years, thinking they were the sun. A girl repairing machines picked up a chip at a scrapyard with her dead father's job number engraved on it. She didn't believe he was dead, she didn't believe the ground was poisonous, she didn't believe there was no sunshine in the world. She was scared to death. But she went up anyway.