In the Ming dynasty of China, Shen Lian (starring Chang Chen), a secret police of corrupt government, is trapped by the conspiracy on a mission. To prove the innocence, he seeks the truth with a girl called Bei Zhai (starring Yang Mi).

Gao Chun, a young captain, steers his cargo boat up the Yangtze river. His father has recently died and, according to his beliefs, his son is now responsible for liberating his soul. At the same time, Gao Chun is looking for the love of his life. But all the women he meets in all the different ports are the same person: a magical being who grows ever younger the closer he gets to the source of the Yangtze. His trip up river turns into a journey through space and time.

A rescue unit within the Chinese Coast Guard are forced to overcome their personal differences to resolve a crisis.