The protagonist, Lin Jianjun (born in 1982, a contractor born in the 1980s), is heavily in debt in 2026, his career has collapsed, and his marriage is on the verge of breaking up. Party A defaults on project payments, and workers are asking for wages. His life has hit rock bottom. I accidentally visited Panjiayuan and bought an unsigned ancient book at a low price (actually a "time deed" that carries the memory of the times). When I was reading it late at night, I was electrocuted and reborn into my 23-year-old self in 2005. At that time, he had just started as a construction site worker and was doing odd jobs with a small contractor from the same hometown. He was ignorant and his future life trajectory was already destined to be at a low point. After rebirth, Lin Jianjun, with 21 years of life experience, engineering industry experience and memories of the era from 2005 to 2026, relied on the opportunities brought by real social events during the period to avoid all the pitfalls of the past and seize the real estate explosion, infrastructure dividends, and the Internet. Opportunities such as Internet sprouts and venture capital trends make him counterattack from a construction site worker to an industry giant; at the same time, he confronts his ex-wife, saves his first love, makes up for family and emotional regrets, and connects multiple side stories to create a counterattack life that is dense with explosive points, emotionally delicate, broad-minded, and in line with the times.