Li Ming, an avid fisherman, releases a golden koi into the river and unexpectedly gains the ability to sense hidden risks. Bad contracts, fake partnerships, and schemes lurking in the shadows can no longer escape his notice. Starting as an ordinary wage earner making just 4,000 yuan a month, he gradually sees through business traps, protects the ecology of the old river, and helps the riverside villagers, ultimately becoming a true guardian of the river. Gu Wanqing, the heiress of the Gu family who loves him, stands firmly by his side, while his father, who disappeared twenty years ago, also returns to the riverside. A golden koi and one act of kindness teach him that wealth and opportunities all come from that initial good-hearted deed. The road is made by those who walk it, and as long as he holds on to his kindness, the path ahead will naturally open wide.