One night, a mysterious series of murders occurs, and all victims are connected to "Kantakwee," a famous young actor. Later, "Lieutenant Thara," a tough female police officer, finds the body of "Natcha," a lawyer and her sworn enemy, lying in a pool of blood, murdered by the killer. Thara miraculously saves Natcha's life, but when Natcha recovers, she has lost almost all of her memory. Natcha becomes a key witness that Thara must protect 24/7. However, Natcha's amnesia makes Thara wonder if she is truly a victim or the killer... As they live together to uncover the truth, their closeness gradually transforms into a bond. But danger lurks in their relationship every minute, as the serial killer relentlessly hunts Natcha! As Natcha's memories slowly return, she draws closer to death. Can her former rival become her lover?