Gu Taifeng (Wen Mason) is a gifted teenager with a high IQ. He grew up in a single-parent family and was full of doubts and curiosity about his life experience. Finally, one day, Gu Taifeng hacked into the hospital's database and discovered the secret hidden in his life experience. It turned out that his father was a young man named Zhou Liyan (Aarif Lee), who had donated sperm when he was young, and became Gu Taifeng's biological father by chance. So Gu Taifeng decided to travel across the ocean and embarked on a journey to China to find his father. Faced with this sudden "son", Zhou Liyan's attitude was to refuse. He was not ready to be a father at all, let alone take care of such a quirky child. Next came Gu Taifeng's mother Meiyan (Kim Ha-neul). The appearance of her and Gu Taifeng brought earth-shaking changes to Zhou Liyan's life.