Lin Zhao, a high school student from China on Earth, accidentally crossed over and became a red species at the bottom of a Martian mine.
Under the imprint of proletarian ideology and cruel caste oppression, he witnessed the arrogance of the silver species and the iron fist of the gold species. He became a brother with Dai Luo, who was also in the abyss, and vowed to tear apart the shackles of the "Color Class Destiny".
The fire of resistance in the mine was just ignited before it was reduced to ashes by the betrayal of the informer.
The bones of his relatives and the blood of his friends became the heaviest mark on his escape.
He became a wanted criminal and was seriously injured. He was rescued by a blue type with a special attitude. On the edge of life and death, he developed cross-class feelings.
But because of past betrayals, he was always wary of the "golden warrior" Dai Luo, never realizing that he was an "other" from the bottom like himself.
When the Howler's flag was raised in the Martian wasteland, Lin Zhao stood up again with the ideological fire of the earth and the scars of growth.
He must make a choice between friendship and suspicion, love and mission, and together with Dai Luo, turn the roar of the red species into a thunder that shakes the entire Mars class order.
And those foreshadowings buried deep in the mines and in the blue spacecraft will eventually reveal a truth more cruel than caste oppression before the bloody dawn.