After admitting the man he had been looking for in the hospital, Seol-hyun enters a room where he sees Soo-hyun standing in front of a comatose woman. Suddenly, the woman, Kim Eun-bin, goes into shock and Seon-yul rushes to bring her back while Soo-hyun goes into a state of shock herself as she remembers all the times when things went wrong in her life. Eun-bin is fortunately saved in time and the two later meet on the rooftop where Soo-hyun questions Seon-yul but he is in no state to answer her and runs away.
Soo-hyun then asks Kang Tae-ho, her brother in law about Eun-bin and finds out that her chances of survival are very low. The next day, Soo-hyun begins looking at the details of the incident and into the probability that it must be her son who sent her the information along with the pictures.
Elsewhere, Su-ho meets Soo hyun’s mother and tells her how the mistake happened when he drowned himself in alcohol upon losing his son and wife. Coming back to an empty house filled with the memories of their once-happy lives is what led him to commit this mistake. This is overheard by Soo-hyun who finally decides to bring this chapter to an end.
She goes to meet Yu-ri and reminisces about their past following which she returns home. The next morning, Su-ho wakes up to know that Soo-hyun has returned to their house and rushes back home. There, Soo-hyun tells him that she has decided to stay with him and put things behind them once and for all.
Meanwhile, Seol-hyun visits Eun-bin again while Soo-hyun gets the real report on Eun-bin’s case. She questions the reporter about why she thought the incident was not an accident and the latter tells her about the details like the speed and the familiarity the driver had with the terrain which gave her doubts.
Soo-hyun continues her research about the case before going to meet Eun-bin again. However, she fails to pick up Tae-ho’s call. He has information about Eun-bin and Seol-hyun. Meanwhile, the thugs from the gambling place have arrived at the hospital to collect their debts from Kwon Min-hyuk and resort to unethical methods for the same.
Seol-hyun arrives right then and chases the men out which is seen by Soo-hyun. She then rushes behind him to reprimand him but he tells her that she has no right to do so as she is nothing but a murderer. This hurts Soo-hyun deeply while Seon-yul shows remorse upon reaching home.
The next day, Su-ho suggests moving out from their home but Soo-hyun is against it as Gu-won’s memories still lie in this house. She later goes to help her mother and Yu-ri make kimchi for charity after which she takes some kimchi to Seol-hyun. He apologizes for his behavior the other day and Soo-hyun accepts the apology while making sure he knows that she will continue to meddle in his affairs.
He then offers to fix her tires during which Soo-hyun watches the stars she once gazed with her son. Seol-hyun shows her the constellations and talks about the stories behind them. The two finally calm down and makeup after this night. Later, Seol-hyun meets Kim Joon’s subordinate who tells him to trail behind Su-ho while Su-ho’s friend takes pictures of this exchange.
The next day, Su-ho takes Soo-hyun out for an exciting lunch during which she notices the flames and remembers that the boy she was looking for had a fear of fire. However, Seon-yul was easily able to face fire the previous night. This reminds her that she also didn’t see any burn marks on his back which were there on the boy. This sudden realisation shocks Soo-hyun and she begins to wonder about his true identity.
Meanwhile, Seol-hyun arrives at Eun-bin’s room and calls out to her as, “Mom”.
The truth has been revealed. Seol hyun actually had nothing to do with the fire accident. He has his own agenda for revenge. He’s the son of the man that Soo hyun killed. What a roller coaster.