In a world where danger and shadows lurk beneath the surface, Felix, a normal schoolboy, unknowingly crosses paths with the mafia when he meets Han Jisung, a skilled but conflicted member of a powerful crime syndicate. What starts as an unlikely friendship soon grows into something deeper as Felix is drawn into Jisung's world of secrets, betrayal, and violence.
Throughout their journey, Felix learns that trust is fragile in a world ruled by power and greed, while Jisung struggles to protect Felix from the dangers of his criminal life. Their bond is tested as they face deadly enemies, complex loyalties, and life-altering choices. When it seems like all hope is lost, a surprising ally, Lee Know, emerges, helping them in a final battle to overthrow a common enemy.
Amidst the chaos, Felix and Jisung's love blossoms, but they must confront the brutal consequences of their choices. In the end, they find that love and loyalty can survive even in the darkest of times. Together, they must decide whether they can build a future beyond the violence of their pasts.