In episode 7 of "When the Phone Rings", Baek Sa Eon (Yoo Yeon Seo) and Hong Hee Joo (Chae Soo Bin) had a fun time together on a company trip.
However, things take a turn for the worse when Hee Joo falls off a cliff, leaving Sa Eon in a panic. When the blackmailer known as 406 calls, Sa Eon finds Hee Joo's location.
In the new information released by the station, Sa Eon talked to 406 over the phone and pretended not to know this person's real identity.
Sa Eon knew that 406 was his wife, and was no longer nervous when talking on the phone. Hee Joo was also surprised to see Sa Eon's change in attitude when talking to 406.
At this time, Hee Joo became jealous when her husband tried to tease and flirt with 406. She was not sure if he knew about the identity of the blackmailer.
Sa Eon then asks 406 to cooperate in finding the real kidnapper. Another photo released by the crew shows Hee Joo talking on the phone at a park late at night.
The scene foreshadows a new plot twist, as Hee Joo is once again alone at night, in a place with few people around.
The production team revealed, “Sa Eon will begin a serious investigation to catch the dangerous kidnapper who threatened Hee Joo. Please look forward to this episode where the feelings that Sa Eon and Hee Joo have been hiding for so long will explode.”
For over a month, "When the Phone Rings" has attracted the attention of audiences in Korea and many Asian countries, including Vietnam.
According to many reviews, one of the factors that helps the film attract viewers is the suitability of the two main actors for the characters they play, and their "chemistry" on screen.
Even though he always has a cold expression and doesn't show much emotion when he's with Hee Joo, Sa Eon always gives special priority to his wife and silently takes care of her.