About the book: year / In Shanghai in the near future, the world is turned upside down for a group of teenagers when one of them is kidnapped. Jason Zhou, his friends and Daiyu are still recovering from the aftermath of the attack on the Jin Corporation headquarters. But Jin, the billionaire and Daiyu's father, is out for blood. When Lin Yi goes to Shanghai to help Janie Cai, a childhood friend in trouble, she doesn't expect Jin to be involved. And when Jin kills Janie and steals the device she refused to sell him, only Lin Yi has access to the encrypted information, and her life is in danger. Zhou immediately goes to China to help Lin Yi, although he stayed away from his friends for months. But when Iris tells him that he can't tell Daiyu about this or trust her, he begins to doubt his decision. A group of friends play a dangerous game of cat and mouse in the labyrinthine streets of Shanghai, wanting to return what Jin stole. When Daiyu appears in Shanghai, Zhou does not know whether she has come to oppose her father or to support him. Jin proudly announced that Daiyu would be at his side for the opening of the Jni Tower, his first “vertical city.” And although Zhou and his friends are fighting with all their might, Jin has the advantage. Can they survive this game, if not win??