Punch is a gripping South Korean legal thriller that follows Park Jung-hwan, the head of the anti-corruption investigation team at the Supreme Prosecutors' Office. A ruthless and ambitious prosecutor who has compromised his morals to climb the career ladder, his life takes a drastic turn when he is diagnosed with a malignant brain tumor. With only months left to live, he decides to use his remaining time to dismantle the corrupt system he helped build. As he navigates his final days, Jung-hwan enters a high-stakes battle against his former mentor, Prosecutor General Lee Tae-jun, and his ex-wife, Shin Ha-gyung, a principled prosecutor who refuses to abandon her ethics. The series explores themes of redemption, the heavy cost of ambition, and the moral complexities of the legal system, as Jung-hwan fights to right his wrongs before his time runs out.