His name is Liuli. His parents divorced when he was 4 years old. His mother is missing. His father found a stepmother for him. His stepmother's hypocrisy disgusted him. Since the stepmother's appearance, he began to hate all women, except his biological sister and her, Ling Xin'er. When he was 10 years old, he made a promise to his childhood sweetheart Xin'er, "Brother Ali, will you marry me when you grow up?" "Of course, we will be the happiest couple when we grow up." "Okay, I like brother Ali the most." But the good times did not last long. Ling Xin'er disappeared for no reason. He relied on his family's strength and searched the entire A city but could not find her. The Ling family also searched for a long time, but failed to find their most beloved little daughter. After three years, it was finally announced that Ling Xin'er had passed away. Eight years later, they met again. Liuli thought there was no more Ling Xin'er in the world, but she reappeared as Ling Keke. Will they recognize each other? Will it fulfill its promise?