Ha Dong-soo is a reclusive young man gifted with regenerative immortality, a condition belonging to a rare species known as "Connects." Living a lonely existence punctuated by streaming his self-composed indie music, Dong-soo’s quiet life shatters when he is abruptly abducted by a ruthless syndicate of organ harvesters. As the surgical team operates on his body, harvesting his organs one by one, Dong-soo’s biological anomaly triggers. His body refuses to die, and as his vital organs rapidly regenerate and stitch themselves back together, he manages a chaotic, bloody escape, though he loses his right eye in the frantic melee.Meanwhile, a smooth-talking, fiercely ambitious man named Oh Jin-seop lives a double life. To the outside world, he is a polite, mild-mannered
office worker and an acclaimed artist; in secret, he is a psychotic serial killer who meticulously turns his murder victims into gruesome, avant-garde corpses, earning him the terrifying moniker "The Corpse Art Sculptor." During his latest violent extraction, Jin-seop receives a donated eye—which happens to be Dong-soo’s stolen right eye.Through a bizarre biological quirk, Dong-soo suddenly begins experiencing vivid, involuntary hallucinations directly linked to his missing eye. Whenever Jin-seop uses the eye, Dong-soo sees the gruesome world through the killer's perspective in real-time, catching chilling glimpses of his next planned atrocities. Spurred by a desperate need to reclaim his stolen body part and a strong moral compulsion to stop the bloodshed, Dong-soo embarks on a relentless pursuit of the killer.Complicating his mission is Choi Rang, a mysterious young woman who also happens to be a Connect. Rang is well aware of the syndicate's operations and Dong-soo’s true nature, and she steps in to guide him through the hidden dangers of the city. As Dong-soo gets closer to his target, the ruthless organ-traffickers also re-enter the fray, hunting Dong-soo down to exploit his immortal biology for unimaginable wealth.The narrative culminates in a high-stakes, hyper-violent
confrontation. Dong-soo corners Jin-seop, forcing the cunning serial killer to utilize his artistic crime scenes as twisted battlegrounds. Pushed to his absolute limits, Dong-soo must embrace the terrifying potential of his immortality, confronting not only a sadistic murderer and a criminal syndicate, but also the agonizing truth of his own isolated existence as a freak of nature. Ultimately, Dong-soo reclaims his eye and defeats Jin-seop, yet he is left to wander the shadows alone, forever connected to a dangerous world that will never accept him.