Village doctor Wang Dongqing was accused of poisoning and killing him. During the live broadcast of the trial, he had an arrogant attitude and made remarks such as "it is not illegal to get high", which caused public outrage. Just when he was about to be sentenced, Chen Xiulan, who had been presumed dead, suddenly appeared, and Wang Dongqing immediately changed his attitude and revealed the truth. It turns out that all this was a game he set up by "playing chess" in order to expose the shady story of the rural medical field and the conspiracy of certain people. In the end, he successfully brought the mastermind behind the scenes to justice, and the rural medical environment was rectified. He cleared his grievances, and achieved justice and redemption with a shocking reversal of "no regrets".