While running errands for his older sister, Nam Gungyang meets Li Siun, but things have become awkward between them. Although he succeeded in leaving just when the awkward atmosphere turned suffocating after uncomfortably saying hello to each other, it seems like his bag, which was full of certain types of samples, got switched???

Raymon has it all: perfect looks, a prestigious family, and unrivaled abilities in the workplace. But beneath his flawless exterior lies a chaotic love life, with a string of unsatisfying, fleeting encounters. His search for the perfect partner ends when a janitor named Winter seemingly saves him from a stalker's attack. Drawn to Winter’s striking looks and submissive nature, Raymon proposes an FWB situation, to which Winter eagerly agrees. At first, their relationship seems ideal, but Raymon soon realizes the terrifying truth - Winter has been his stalker all along. Now trapped in a deadly game, Raymon finds himself pretending to love Winter in a desperate bid to survive. Winter, unhinged and obsessively devoted, will stop at nothing - even murder - to keep Raymon all to himself. And so begins a dangerous, seductive battle of control, where love and dominance blur into a deadly obsession.