When the Phone Rings

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  1. Episode 1

  66m

  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.

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  2. Episode 2

  69m

  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.

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  3. Episode 3

  68m

  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.

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  4. Episode 4

  70m

  After receiving the ominous call, Hee-joo abandons her clandestine plan. She then undergoes a tough interview with Sa-eon — sharing an intimate moment.

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  5. Episode 5

  71m

  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.

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  6. Episode 6

  70m

  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.

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  7. Episode 7

  69m

  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.

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  8. Episode 8

  71m

  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.

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  9. Episode 9

  66m

  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.

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  10. Episode 10

  68m

  While attempting to rescue Hee-joo, Sa-eon discovers another surprising conspirator — whom he later tries to persuade to help locate the kidnapper.

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  11. Episode 11

  64m

  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.

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  12. Episode 12

  67m

  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.

Cast

Yoo Yeon-seok

Baek Sa-eon

Chae Soo-bin

Hong Hee-ju

Heo Nam-jun

Ji Sang-woo

Jang Gyu-ri

Na Yu-ri

Lee Doo-seok

Kang Hyeong-Cheol