Yohan, with a hazy memory of his history, holds Lee Dajeong dearest to his heart, the focal point of his existence. Monitoring her every move and surrounded by images of her, he sees himself not as a stalker but as a protector. Keeping a watchful distance, Yohan stands ready to aid Dajeong in her times of need. However, a looming threat shadows her, raising questions: could this peril and Dajeong herself hold the secrets to Yohan's enigmatic past?