Lin Feng is an outsourced maintenance worker earning a base salary of just 3,000 yuan a month. During a torrential downpour, he saves Su Qingxue, the general manager of Dingyue, during an emergency rescue, only to have Manager Wang give the sole permanent position to his nephew, Zhao Gang. Furious, Lin Feng resigns. Armed with irrefutable evidence of corruption, he exposes Wang and Zhao at a homeowners' meeting, getting them fired. Su Qingxue hires him as technical director at triple his previous salary and helps save his mother's life. Lin Feng is then appointed to Jiangwan No. 1, where he overcomes internal sabotage. Wang and Zhao join Taihao to take revenge, resorting to acid attacks and flood-control sabotage during a typhoon. As Lin Feng and Su Qingxue face danger together, they fall in love. In the end, Lin Feng helps Dingyue crush Taihao, sends Wang and Zhao to prison, and sees his mother successfully undergo surgery. He rises from a muddy, hands-on maintenance worker to a technical tycoon and wins Su Qingxue's heart.