Ever since a kidnapping attempt bound their fates 25 years ago, awkward nobody Sota has secretly built his life around protecting his childhood love, Mariko. Now working quietly at her family’s company, Sota is forced out of the shadows when Mariko faces corporate sabotage and her former kidnapper resurfaces.

Stepping into her orbit for the first time, Sota delivers miraculous saves that feel like a fairy-tale romance. But as threats escalate and Mariko's corporate rival is brutally murdered, his covert interventions leave a dangerous trail. Charismatic Detective Taisuke courts Mariko while positioning Sota as the prime murder suspect.

Paranoia tightens around Mariko as sinister motives surface across her circle: a powerful father tied to her abductor, a stepmother targeting succession, a detective edging into her heart, and Sota’s own confidant. As 25-year-old cold case secrets explode, Sota faces his ultimate choice: stay hidden in the shadows, or step into the light to save her.