Eighteen-year-old heiress Tang Yuanyuan weighs 250 jin (125 kg). Spoiled, willful, and obsessed with food, she is sent by her father to the Baiyagou wilderness training base, where milk tea, internet access, and special privileges are off-limits. Under the guidance of instructor Jiang Yan, she and several other young women, each struggling with their own difficulties, begin their training. At first, Tang Yuanyuan refuses to cooperate and gives up on the exercises, but the rigors of training gradually wear away her spoiled ways. The group takes on physical conditioning, wilderness survival, and practical labor before heading to Heishiao to tackle a simulated 100-kilometer relay challenge, confronting physical pain and their own self-doubt. After three months of intensive wilderness training, the young women resolve their personal struggles and learn to accept their imperfections. Tang Yuanyuan completes her transformation and sets her sights on studying an emergency-management-related major, embarking on a journey of personal growth.