Two people just off the train to their childhood playmates Wei Dong home. The three grew up together partner, three kinds of different life experiences, three different way of life. Wang Zhe is a green hand, determined to become a good detective. Wei Dong fall into a wrong path, he saddled with a not to be divulged secret. Tang Wensheng find work repeated setbacks, he did not know why always run. Between the sky and Wu two group in the battle, the three partners involved in a series of change constantly like cloud and wave events. Wang Zhe investigated the case, found Wei Dong involved, Tang Wensheng also with the parties there have all kinds of connections with contact, through the security personnel of careful investigation, finally the case is entirely cleared. Through the experience of Wang Zhe became a mature Interpol, Tang Wensheng returns to the rational, Wei Dong eventually paid the price for his impulse.