Synopsis：Lin Guoguo and Qian Bin were lovers. They fell into a drug dealers' trap and became addicted to drugs. Feng Xiaonan, a colleague who had a crush on Lin Guoguo, sent her to a drug rehabilitation center. After successfully quitting drugs, Lin returned to the stage to rehearse a new dance. Qian Bin became an undercover agent for the police and finally cracked a major drug-trafficking case at the cost of his life, perfectly fulfilling his promise.