Before retiring, he was framed and imprisoned for bribery. Reborn in the 1970s, he carries memories of the future, beginning with his military service and gradually retracing his path as a police officer. He solves numerous major cases, from the Red Star Farm murders to the theft of a general's tomb, accumulating merit and reputation. Meanwhile, he secretly investigates the mastermind behind his past life's frame-up, protecting his family from repercussions. Facing political intrigue and the test of human nature, he draws on the experience of two lifetimes to uphold justice, vowing to redress injustice and become the true backbone of the police force.