Meng Lan, a 15-year-old Chinese girl, received a spine surgery which traumatized her both physically and mentally. Being in a foreign country, the conflict between Meng and her mother Wen Li became even more violent. Coincidentally, she had a chance to meet Olivia, an ethnic Chinese girl adopted by an American couple. The two girls quickly became close friends. Olivia invited Meng Lan to go swimming and encouraged her to do whatever she wants. Meng Lan kept the truth from Wen Li that she skipped her rehabilitation training and tried returning into water for the first time after her surgery. While enjoying the pleasure brought by rebellion, her relationship with Olivia is also experiencing a subtle change. However, Wen Li soon discovered Meng Lan’s secret. She decided to end Meng’s rehabilitation earlier and take her back home...