Jimin, a newly hired teacher at a juvenile facility, recognizes an extraordinary talent in the writing of Kangjun, a violent young offender. As he delves into Kangjun's deeply personal stories of despair and isolation, he finds himself unexpectedly moved. Captivated by both the raw honesty and undeniable brilliance of Kangjun's words, Jimin becomes determined to nurture his talent. In turn, Kangjun, wary and guarded, begins to let his walls down. But when the true reason behind Jimin's interest is revealed, the fragile trust they built shatters, leaving only anger and betrayal in its wake.