A hit-and-run. A cover-up. A debt-fueled murder plot. Karma weaves together the fates of six characters, each bound by a single, irreversible moment. The series stars Squid Game's Park Hae-soo as the Witness, Shin Min-a as Ju-yeon, Lee Hee-jun as the Debtor, Kim Sung-kyun as Gil-ryong, Lee Kwang-soo as Glasses, and Gong Seung-yeon as Yu-jeong — each caught in a web of choices that refuses to be buried.