Haunted by guilt, detective Jeong Hae-il flees his past in Daegu, seeking refuge in his hometown of Seoul. But the city isn't as forgiving as he'd hoped. Soon, he's forced to confront the ghosts of his trauma when he crosses paths with his old flame, Junseon, now tangled up in a dangerous new drug. Just when things couldn't get more complicated, a mysterious ally named Hangyeol emerges from the shadows—but can Hae-il really trust him? In a city filled with secrets, can any of them overcome the odds?