wei yingying, a female college student from a poor family, met a little boy who had been following her all the time, named xinzheng eee。 but he suffered from the disease, although he was 8 years old, he was already 17 years old. a few years later, xin zhengzheng, who grew up, could never forget his "sister" wei yingying. he found wei yingying who was at work and began to pursue his fierce pursuit of his young lady. but in the face of various problems such as the gap between the rich and the poor of the two families, the trusted family engagement, can they finally get married with lovers?