A rising politician and his mute wife's tense marriage begins to unravel after a call from a kidnapper turns their lives upside down.
Episode 1
After receiving a call from Hong Hee-joo's kidnapper, Paik Sa-eon attempts to learn more about him - only to find it's hard to escape his surveillance.
Episode 2
Sa-eon works quickly to track down the caller, forcing Hee-joo to stay hypervigilant. Despite her fears, she continues to play along with the ruse.
Episode 3
After Sa-eon experiences an attack, he grows wary of Hee-joo's relationship with her friend. Meanwhile, an ominous figure makes his presence known.
Episode 4
After receiving the ominous call, Hee-joo abandons her clandestine plan. She then undergoes a tough interview with Sa-eon - sharing an intimate moment.
Episode 5
Sa-eon grapples with feelings of betrayal after learning the truth about Hee-joo. However, when she receives good news, they begin to grow fonder.
Episode 6
Hee-joo confronts a figure from her past who wishes to reveal what she knows. She then embarks on a retreat with Sa-eon - who becomes possessive of her.
E7. Phone Ring
Sa-eon and Hee-joo's relationship shifts after her harrowing rescue. Determined to catch the kidnapper, Sa-eon goes full force - with the help of 406.
E8. Phone Ring
As Hee-joo and Sa-eon grow closer, the threat from the kidnapper intensifies. Sa-eon discovers an ominous and shocking clue from a past figure.
E9. Phone Rings
Hee-joo worries about Sa-eon after learning the truth about him. She later appears on the stage of her dreams, side by side with her love.
E10. Phone Rings
While attempting to rescue Hee-joo, Sa-eon discovers another surprising conspirator - whom he later tries to persuade to help locate the kidnapper.
E11. Phone Rings
After Hee-joo's bold move, her fate and that of her kidnapper remain uncertain. But Sa-eon refuses to give up - leaving no stone unturned to find her.
E12. Phone Rings
Sa-eon abandons everything he's worked for, leaving Hee-joo completely alone. But after a clue arrives, she embarks on a journey to reunite with him.
