Lights in the Dusk movie plot

Costinan is a night security guard. Although he is young, he does not have the vigor of his peers. His loneliness is like a lingering net, closely entangled in Costinan's heart and life. He is often made fun of by people around him. The barren life and the desire for emotion made him unable to extricate himself. Once accidentally, Costinan met Mir Ya, an elegant blonde beauty. As long-depressed emotions exploded, Costinan regarded Mir Ya as everything in his life, and even proposed marriage soon after they met. The simple Costinan didn't know that Mirja was actually a veteran in love, an out-and-out liar, and often mingled with a mob. Mirya approached Costinan to complete the long-planned robbery. Soon, the jewellery shop guarded by Costinan was ransacked by the bandits, and the cold Mirja left him, and Costinan became the scapegoat for this endgame. As a result, Costinan lost his job and freedom, and only the endless darkness after the disillusionment was waiting for him   .