Zhao Erhu, who was wrongfully imprisoned for twenty years in his past life, is reborn back to 1983. Turning over a new leaf, he saves town mayor Qin Xue, who is plotted against by villains, and resolves to pass the exam for the sugar mill security section. Facing repeated framed-up schemes and calculations by Sun Qiang and his son, Zhao Erhu relies on his wisdom and courage to defuse crises one by one, gathers criminal evidence, joins hands with everyone to take down the dark and evil forces, rewrites his tragic destiny, and reaps a career and love.