Without Bon, Ae Rin has been living a quiet life in Jeju Island where her parents are. One day, she reunites with someone she thought she'd never meet again. The operation continues.

Ji Yun is certain that Chief Kwon was behind the explosion. She makes up her mind to bring down CornerStone and take revenge. People are trembling in fear because of the rumor of an airborne virus, and Case Pharmaceuticals' stocks are skyrocketing.

Young Shil finds out that Ae Rin has lied to her about knowing Bon and arrests her under the charges of hiding a wanted criminal. When the director confronts her and asks how she could arrest a civilian, she tells him that Ae Rin has committed a crime. Bon hears about this news and decides to use the DEATH protocol.

A terrorist attack is suspected at a school, and Ae Rin realizes that it is the very school her children are currently at. It turns out that the target is the Minister of Health and Welfare. They try to reach the people who are currently there, but nobody picks up. After hearing about this, Bon rushes to the school.

Ae Rin finds out that Bon's birthday is coming up. Meanwhile, Sun Mi suspects her husband of having an affair. The KIS conducts an operation to get to the bottom of it.

Bon rushes Yong Tae, or In Soo, to the hospital and gets him treated. Yong Tae demands protection in exchange for the information Bon wants. Bon finally finds out who Yong Tae has been working for.

Ae Rin and Joon Joon move into Bon's house so that Ae Rin can look after him. The four of them have dinner together, and Bon watches them and shows a heartwarming smile. The next day after coming back from grocery shopping, Ae Rin finds out that Bon has left her a note, saying that he will be gone for the time being.

Bon is chased by Young Shil and her men. Just before he jumps from the bridge to the waters, he is shot in the shoulder. Ae Rin dives in, rescues Bon who is unconscious, and brings him to her place. While she goes out for a short while, Young Shil rings the doorbell.

Ji Yun becomes worried, seeing how different Bon has become. While spend-ing time with the housewives, Bon gathers information on the residents of King Castle. A mysterious man orders J International to be cleaned out.

Ae Rin discovers the secret hideout, and Bon ends up telling Ae Rin the truth. Ae Rin finally understands why strange things have been happening around her. Meanwhile, Yong Tae is onto the people at King's Bag.

Young Shil visits King's Bag, and fortunately, Do Woo and Ji Yun are not there. She lies to Ae Rin and tells her that she is interested in recruiting her. However, after observing the shop and talking with Ae Rin, she does not have any definite proof that the place is suspicious.

To Bon who is leaving, Ae Rin calls out Wang Jung Nam, and Bon turns around. Furthermore, Ji Yun calls Bon on his phone. Ae Rin asks Bon who he truly is and how he knows her boss. Meanwhile, Ji Yun reminds Bon about the incident in Poland and tells him to end things with Ae Rin.

Bon rushes Joon Hee to the hospital when she's feeling sick. Later, he reveals another player involved in Operation Candy.

The KIS wonders about Bon's increasingly strange behavior. CEO Jin shows up unannounced to King's Bag.

Ae Rin interviews at King's Bag, but as usual, she is not quite in the loop. The other parents try to take advantage of Bon's supposed fortune-telling abilities.

A very confused Ae Rin wonders if she could be in serious danger. But Bon is on her tail.

When everyone becomes suspicious about J International, Ae Rin decides it's time to do some snooping.

Three years ago, Bon tries to save his loved one in Poland. In the present day, Ae Rin panics about the damaged luxury bag.

Ji Yun tracks Bon, trying to see what he's been up to. Bon hunts down the suspicious stickers the twins previously handed out to their friends.

Bon slips right into agent mode as footage of Jung Il is uncovered. Ji Yun investigates the case on her own.

Bon volunteers to watch the twins, but it could be the mission of his lifetime. Ae Rin starts her new job.

As Ae Rin mourns her husband, the search for her kids begins. Meanwhile, Bon tries to evade those looking for him.

Ae Rin receives unexpected help when she angrily leaves home. Unfortunately, her troubles are just beginning.

Go Ae Rin, an unemployed mother of two, continuously bumps into her neighbor, a brooding man of few words. The two interpret their interactions very differently.