CEO Lu Ning came home from a business trip and found a three-year-old girl in his house.
After asking around, he learned that she was the little sister his parents, who spent most of the year traveling abroad, had given birth to.
But that didn't make sense. They came home for a month or two every year, and this little girl hadn't been with them during the past two years.
Lu Ning pressed them for answers, but got nowhere. His irresponsible parents left his little sister with him, then promptly went abroad to continue their travels, leaving him and Lu Si staring at each other.
Lu Ning was busy with work, so he planned to hire a nanny to look after Lu Si. But before a day had even passed, the nanny fled in terror. No matter how he asked, he couldn't find out why.
After this happened several times, Lu Ning secretly went home during work and witnessed a scene that completely overturned his worldview.
Theme: Even siblings with a big age gap can be very loving.