Qianfan Group's Gu Feifan accidentally discovers Gu Chengzu, who bears a sun birthmark, at Black Stone Mine. Secret DNA testing confirms him as his biological son, who was swapped and imprisoned by the Black Kite Guild for twelve years. Father and son endure and plan in secret, feigning a release of power to lure the mastermind villain Shen Heting's faction into exposing their flaws, setting up a financial trap. At the banquet, they expose the impostor's crimes in public, coordinate with the public security to completely wipe out the entire smuggling criminal network, rescue the victimized miners, and Gu Chengzu returns to his ancestry and rightful place, joining hands to guard the Qianfan Group.