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Police officer Liang Dachuan mistakenly injures a hostage during his mission. The police also find that the case is closely related to a criminal gang codenamed "Flamingo," which leads to a series of cases that become more and more confusing. With the cooperation of Liang Dachuan, the police start to speculate around the victim's last words "six-colored magic cube," and the mystery man "Plan A" begins to reveal its loopholes. As the police investigation deepens, all the cut-off clues have a new direction, and the conspiracy about to be unraveled; behind the new drug case, the unknown secrets of the victim's family gradually emerge; Liang Dachuan endures humiliation and power struggles, but the mystery of his own birth is involved. The police finally brought the criminals to justice after all the hardships. The young police officer's zealous heart and temperament for the people is to be celebrated....