Lin Xinjing, a former Olympic figure skating champion, is reborn at eight. She finds her younger sister is also reborn and has chosen their mother first. Lin Xinjing resolutely stays with her father and builds a new family with the cold stepmother Shen Yun, embarking on a career in scientific research. Years later, her sister hits rock bottom after being bullied and suspended by teammates in America and returns home begging for help. As a Tsinghua-Peking doctoral graduate in life sciences, Lin Xinjing crosses over to coach her. Using scientific training methods, she guides her sister from city-level events through national trials and the World Tour. At the Winter Olympics, the sister lands the first women’s quadruple Axel in human history to defeat her rival and claim the gold medal.