Lin Xiang and Lan Fang, who is pretending to be his wife, are sent to Shanghai to rebuild the underground headquarters and help liberate China from the Japanese invaders.
Set against the social turmoil of China's Cultural Revolution, 12 years old Yue Haiyang is forced to leave the swimming team despite his dreams to become the greatest swimmer of his generation. In a quest to fulfill his dream, friendship and loyalty are tested as three friends wade through the waters of personal struggle and social unrest.