Wu You (played by Huang Xiaoming) lives a carefree life, as his name suggests. He is single and lives with his nearly 70-year-old mother Zhang Baoxia (played by Lu Xiaofen). He joined an organization called the Sunshine Club as a senior partner, but his mother suddenly fell ill. Wu You firmly believes that as long as the sun shines in his heart, there will always be miracles in life, and he takes his mother on a journey to find the sunshine.