A modern wilderness survival expert travels back to the 1970s and becomes Chen Feng, a young man mistreated by his second uncle's family. He unexpectedly awakens a spiritual spring dimension that can store items and accelerate growth. Taking on the dangerous job of forest ranger, he moves into a hollow tree in the mountains, hunts game, gathers wild ginseng, and establishes a supply channel with a factory cafeteria. He rescues Song Wanqing, who has hidden in the mountains to escape an arranged marriage, and the two gradually fall in love. His greedy second uncle's family repeatedly comes to seize his supplies. When they recklessly venture into the mountains to hunt in the snow, they wander into a bear's den and meet a miserable end. Using his special space and survival skills, Chen Feng accumulates wealth, registers his marriage to Song Wanqing, and plans to build a house down the mountain in spring, looking forward to a peaceful and happy new life.