Unalterable.

Kwon Sang-gon, defying his father's stern warnings, delves into the gangster world with aspirations of a stylish life. Rising to the position of a gang boss, he anticipates the rewards of his status. However, he soon finds himself ensnared in a web of conspiracies and betrayals, leading to a life filled with bloodshed and regret. As the weight of his choices bears down, Sang-gon grapples with the haunting question: "How many more must die because of me?" Struggling to escape the hellish reality he's created, his father's final admonition echoes in his mind, underscoring the irreversible path he's taken.​