After following Heesoo for a few days, Sun-woo discovers that she is indeed having an affair with another man. However, he hesitates to carry out Kang's orders and instead decides to let them go. This act of defiance doesn't sit well with Kang, who turns against Sun-woo and his loyalty is questioned.
As Sun-woo navigates the dangerous waters of criminal loyalty and betrayal, he finds himself facing off against his former boss and his henchmen in a final, explosive showdown. A Bittersweet Life is a gripping tale of love, betrayal, and revenge, punctuated by stunning action sequences and masterful performances from its cast.