Ep 7. Episode 7

Shim Cheong and Heo Joon Jae discover a disturbing secret about Jo Nam Doo, the con man who had helped them in their previous thefts. After discovering this secret, Shim Cheong is determined to make things right and vows to never involve Jo Nam Doo in their con jobs again.

As Shim Cheong and Heo Joon Jae try to come up with a new plan, Joon Jae receives a surprise visitor at his house. Tae-O, his long-lost nephew, who was presumed dead after a boating accident many years ago, suddenly shows up at his doorstep. Joon Jae is shocked to see him but welcomes him into his home. Tae-O's return brings both joy and pain to Joon Jae, who had believed that he had lost him forever.

Meanwhile, Shim Cheong's past catches up with her as a mysterious man shows up at her door. The man claims to know who she really is and threatens to expose her true identity to the world. Fearing for her safety, Shim Cheong turns to Joon Jae for help. Together, they try to find a way to keep her identity a secret and protect her from harm.

At the same time, Joon Jae's mother is troubled by the recent turn of events and begins to suspect that her son is hiding something from her. She hires a private investigator to look into his past and find out what he's been up to. Joon Jae becomes increasingly suspicious of his mother's activities and begins to question her motives.

As the episode progresses, several secrets are revealed, and the characters must navigate their complicated lives to protect themselves and each other. With Shim Cheong's past catching up to her and Joon Jae's family secrets coming to light, they must work together to overcome the obstacles that stand in their way.

Overall, episode 7 of The Legend of the Blue Sea is a thrilling and suspenseful installment that keeps viewers on the edge of their seats. With unexpected twists and turns, emotional revelations, and complex characters, this episode is a must-see for fans of the series.