Oasis

It's pouring rain in front of Yeosu Hospital, where Young-Tak who is unconscious after being hit by a rock doesn't wake up, Cheol-Woong begs Doo-Hak to confess his crime. Du-Hak, who is in prison, tells Jung-Shin who came to visit "You are worse off". Time flies, Cheol-Woong who is a university student is beaten by Baekgoldan during a demonstration, but who saves him...

Cheol-Woong gets beat up by the security team and becomes a spy. After getting out of prison, Doo-Hak joined a building fraud syndicate. Jung-Shin works together and becomes under Cha Geum-Ok, a theater owner in Seoul. Meanwhile, Yeo-Jin moves to Seoul with the help of Hwang Choong-Sung.

That's how Jung-Shin shouts at Du-Hak who barges into the set and acts as a thug. Du-Hak works with his former prison friends and works with Yeom Kwang-Tak's organization. Then there is Yeo-Jin who opens a Paris Salon and enjoys her time with Choong-Sung. Meanwhile, Cheol-Woong's feelings for Jung-Shin have not gone away.

Du-Hak's sister gets involved in a workers' protest. Du-Hak who was involved to clean up the problem was confused about what he should do. Cheol-Woong, who became a prosecutor, tries to get away from Oh Man-Ok, but Man-Ok tries to use Cheol-Woong's spy skills again. Even worse, they hear the news about Jung-Shin's kidnapping!

Du-Hak defeats Young-Pil in an unimaginable way, and even immobilizes Gwang-Tak. Cheol-Woong borrows Man-Ok's power to save Jung-Shin, and Du-Hak has no choice but to watch the events unfold. After a long time, the three of them gathered at a restaurant. Cheol-Woong declares war, saying that he will challenge Jung-Shin to be his girlfriend!

After seeing Choi Young-Sik's diagnosis of 'non-obstructive Azoospermia', Chung-Seong is convinced that Cheol-Woong is his son. He spends the night with Yeo-Jin, to confirm their love again.

Du-Hak becomes in charge of his organization and takes over the reconstruction work. She sets her wedding date with Jung-Shin and matches the wedding dress. Hearing the news, Cheol-Woong's heart burned. Meanwhile Chung-Seong and Yeo-Jin are also preparing for their wedding.

Du-Hak quits his job as a thug and starts his new job as a construction businessman. He has also set his wedding date with Jung-Shin and matched the clothes for their wedding. Cheol-Woong's heart burns at the news. Meanwhile Chung-Seong and Yeo-Jin are also preparing for their wedding. Joong-Ho finds out about Yeo-Jin's lie about Cheol-Woong's birth, and says that it's not the right thing to do. Yeo-Jin and Cheol-Woong give up the Du-hak family in their own way, and create a new whirlwind of trouble.

Cheol-Woong meets Du-Hak who is undergoing questioning at the prosecutor's office. Du-Hak questions what Cheol-Woong was so surprised about after hearing the news. Cheol-Woong takes Du-Hak out and postpones the inspection to complete the funeral process for Du-Hak's father. Du-Hak's mother wept as she watched her son after he stood guard alone at the funeral home. Meanwhile, Jung-Shin hatches a plan to help Du-Hak and turns to Cheol-Woong for help.

From the dark night to the bright morning, the marine police search for Du-Hak. Jung-Shin is devastated after hearing from Cheol-Woong that it seems Du-Hak has drifted out to sea. Three years later, Cheol-Woong works with Choong-Sung after returning from an assignment in the area. Meanwhile, Jung-Shin hears shocking things about Cheol-Woong from Du-Hak's mother.