She had been very close to her playmate brother Azhan since she was a child. However, Azhan's family had to move to the United States, and they would not move back to China until Azhan was seventeen to attend school. Before leaving, Azhan gave her half an angel wings necklace, and they agreed that she would return it to him when he came back.
But a year after he moved out, she lost the phone number he left her. From then on, she lost contact, and she always believed that she could wait for him...
The promised year... Arrived. In the new semester, two teenagers came into her life, and "Brother A Zhan" seemed to be among them. After that...
Has she found her brother Azhan? Who can give her the ultimate happiness?