Two orphan boy connected by transplant apparatus,meet the same girl under destiny and about their friendship and love....this TV series narrates this 3 people"s love story.Dong zhu and Qi tai who was abandoned by their parents are good friends in orphanage.One day Dong zhu was sent to hospital ,doctor said Qi tai needs lung transplant operation.Qi tai donates his lung withour hesitation.Zhi xiu transfer to Dong zhi and Qi tai"s school and begins their friendships,they swear to be together foever,and male should protect zhi xiu.But one time in order to find zhi xiu"s OCARINA,dong zhu swim into the water to find but disappear later.Zhi xiu and qi tai thought dong zhi is dead,actully dong zhu was rescued by a Japanese couple,after knowing he is an orphan they decided to take him to Japan.15 years later,they meet again and begin a new destiny....