A sixteen-year-old dock laborer at Linjiang Wharf carries heavy loads to earn money for his bedridden mother's medicine. By day, he shoulders hundred-jin sacks of hemp; by night, he trains relentlessly in the river breeze. He possesses fragments of memories from a body-tempering master in his previous life, and a warm current awakens in his palm, helping him piece together scattered mantras into his own body-tempering technique. His strength grows with every passing day. When the dock foreman, Feng Kui, withholds his wages and secretly makes trouble for him, the boy quietly keeps track of every injustice. He enters the strongman's arena and uses skill to overcome brute force, winning back his dignity and prize money one match at a time. A kind-hearted veteran laborer secretly looks after him, a young woman at the medicine shop quietly adds extra medicine, and his ailing mother is his sole motivation. Step by step, the boy turns the burden on his shoulders into a path leading to the heavens.