The final episode of The Frog brings the series to a close, tying up loose
ends and offering a bittersweet resolution. The episode explores the aftermath
of Sung-a's crimes and the lingering questions that remain unanswered.
The episode begins with Bo-min reflecting on Yeong-ha's words from the previous episode. She remains convinced that Sung-a is responsible for Si-hyeon's murder, a lingering mystery that has haunted the series throughout.
Bo-min confronts the Chief about her suspicions, determined to pursue the truth. Despite initial resistance, she manages to convince him to launch a search party to scour the cornfield.
Sung-a, initially uncooperative, becomes more apprehensive when Bo-min mentions the cornfield. A subtle change in her demeanor hints at the hidden truth.
The search party, led by Bo-min, uncovers Seon-tae's body, which had been discarded in the cornfield. The discovery provides crucial evidence against Sung-a.
Yong-chae, also involved in the search, receives a series of missed calls. The police, alerted to the fire at the laundrette, rush to investigate. Jae-sik, the man who took the rifle from the basement, confronts Sung-a with the weapon.
Sung-a's attempts to contact her father are unsuccessful as he has discovered her involvement in Si-hyeon's murder. She admits her guilt to Jae-sik, who is consumed by anger and grief.
Yeong-ha arrives just as Jae-sik is about to shoot Sung-a. Sung-a taunts Jae-sik, urging him to kill Yeong-ha, claiming he is an accomplice. Yeong-ha apologizes for his inaction, admitting that he knew about the murder but failed to report it.
A chaotic shootout ensues, resulting in Sung-a's death. Bo-min is injured, and Jae-sik is apprehended. Yeong-ha discovers Sung-a's lifeless body in the pool, realizing that any hope of finding Si-hyeon's remains is now lost.
Ui-seon wakes up in the hospital, relieved to be alive. Bo-min, mourning the loss of her comrade, reflects on the sacrifices made in the pursuit of justice.
Yong-chae is released from the hospital and returns to the Motel, where he and Yeong-ha discuss the challenges of rebuilding their lives. They decide to hire a contractor to repair the Motel, a stark contrast to Sang-jun's previous struggles.
Bo-min, grappling with the unsolved case of Si-hyeon's murder, visits Gi-ho. She recognizes the connection between the gun used to kill Sung-a and the one used to kill Hyang-cheol. Despite the evidence, she decides not to pursue the case, acknowledging the limitations of her jurisdiction and finding peace in the unresolved mystery.
Jae-sik, though behind bars, receives legal representation from Dr. Yoo's daughter. He is likely to be released due to his connection to the influential doctor.
The series concludes with Yeong-ha celebrating with his family. He decides to sell the Rental Motel, marking a new chapter in his life. Ui-seon gives birth to a healthy baby, bringing joy to the family.
Yeong-ha receives a message about a rental request. To his surprise, the caller is Gi-ho, who expresses interest in seeing the Motel. As the episode ends, Yeong-ha sits at his desk, reflecting on the events that have unfolded. He realizes that his silence has contributed to the tragic consequences of Sung-a's crimes.