The protagonist, Detective Domo (Al Pacino), is a good cop. He and his partner Happ go to a remote Alaska town to investigate a case about the murder of a 17-year-old girl, which is near the Arctic Circle. There are 24 hours of daylight.
It seems that Dormo and his partner Hap are not only partners, they seem to be "negotiating" or "arguing" in a restaurant. It turns out that Hap was under pressure from the police station to confess Domo's earlier case of falsification. Of course Duomo refused to come to his own reprieve, and in order to preserve his reputation, Duomo planted malice in his heart. The two parted unhappily.
It's time for the biggest suspect, the novelist Finch, who appears in the murderer's cabin. During the pursuit, Domo kills his partner Happ with a spare gun (an accident? Not an accident?). He made perjury to frame Finch for shooting Happ. The real scene that happened was also known to Finch. Finch used the phone indifferently to oppress Domo's fear and loneliness; because the 17-year-old girl laughed at him, respect was ridiculed, and he wanted to kill.
Duomo, who was already suffering from insomnia, had been suffering from physical torture in the environment of the white night, but also tormented his heart. He kept insomnia, and there were dazzling lights everywhere. Half-awake, Domo heard 'a good cop can't sleep because there is no clue to handle the case, and a bad cop because of a disturbed conscience. ' And now Domo, who is both good and evil, is a bad cop.
To make Finch, who knew the truth, disappear forever, Domo chased Finch even harder, as if Finch were the source of the disease that made him a bad cop. And Finch died, Domo was dying, he left the words 'don't lose you way\ don't go the wrong way'. Finch \ Domo, maybe the same person, Domo shot Finch, he was shooting his own stain, Domo killed his own weakness, go back to the right path, don't fall into a deeper wrong path for the preservation of reputation.
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