Gao Tianshun, who weighs 290 jin (145 kg), is addicted to online gaming and drives his father to the brink of illness with anger. His parents make the painful decision to sell their house, cutting off his escape routes and forcing him into desperation. Left to fend for himself, Gao Tianshun endures countless hardships. Working on construction sites, he experiences the harsh realities of life and gradually sheds his laziness. When a contractor runs off with his coworkers' wages, he steps forward to gather evidence and fearlessly pursues the fugitive to recover their hard-earned money. Tempered through life-and-death trials, he undergoes a complete transformation. Through honest hard work, he earns the money needed for his father's life-saving surgery, fulfills his duties as a devoted son, and leads his work crew in diligently building resettlement housing. Through labor, he finally discovers the responsibility and worth of being a true man.