This is the last episode of Wonderful days.
Hae Won and Dong Seok move to Seoul. Dong Tak has become a big actor. Dong Hui and Ma Ri are getting married.
Dong Hui is still upset with Tae Seop and he refuses to take care of his father. So Dong Won and Dong Ju had to help Tae Seop. There is only Dong Hui and the twins at home with Tae Seop. Dong Ju and Dong Won are tired. They’ve helped Tae Seop, who was too heavy for them.
Hae Won calls Dong Won to see if Dong Hui is taking care of Tae Seop. Hearing that Dong Hui doesn’t take care of his father, Hae Won wants to return home, but Dong Seok doesn’t. They will enjoy their first trip alone. For that Dong Seok confiscated Hae Won’s phone.
Tired, Dong Won called Young Chun too. Knowing how tired her grandchildren are, Young Chun wasn’t to tell everything to So Shim, who was studying next to her. She goes next to So Shim, but when Young Chun was about to tell So Shim what happened at home, So Shim teacher appeared. Seeing So Shim so happy, Young Chun couldn’t tell her anything.
Later, Ssang Ho and Ssang Shik, who just arrived home, want to send Tae Seop to his home. Hearing his uncles saying that they want to send Tae Seop to his house, Dong Hui remembers that Young Chun said that Tae Seop didn’t know what kind of person was Han Bin, that Tae Seop really wanted Young Chun to be happy. Dong Hui realizes that Tae Seop could have remained silent, but he chose to tell the family what he did. So Dong Hui enters Tae Seop’s room and stops Ssang Ho and Ssang Shik. Dong Hui didn’t forgive his father yet, but he will take care of him.
So Shim comes to visit her family. Dong Won called her and told her that Tae Seop broke his leg. The first person that sees So Shim coming is Hae Ju’s mother. She is happy and runs to her house to announce Dong Tak. Then Ssang Ho and Ssang Shik, who were coming out of the house, saw So Shim. The call their wife’s and everyone is excited to see So Shim. She looks happy and a lot younger. She smiles a lot now. Dong Tak arrived in the street, running.
At the house, So Shim cooked for Tae Seop with Dong Hui’s help. She enters with the food in Tae Seop’s room. Tae Seop is happy to see her. Dong Won and Dong Ju helped him arrange himself to look good for So Shim. Suddenly So Shim’s phone rings. It’s her teacher. Tae Seop is the only one who doesn’t know So Shim’s number. He asks her the number, but So Shim refuses to give it to him.
Meantime, on their holiday, Dong Seok tells Hae Won that he will be transferred to Seoul. They will have to move to Seoul in a week.
Dong Ju and Dong Won want to make a clip with messages from the whole family for Hae Won and Dong Seok as a goodbye gift. Dong Hui said he doesn’t have much to say so he didn’t appear in the clip. Dong Tak cried so much that his brother is leaving that Dong Won and Dong Ju couldn’t let him appear in the clip.
While Hae Won is taking care of the things at home. She gets the luggage done. Hae Ju comes to help her and they said their goodbye.
Dong Seok got everything ready at the office and then went to see Dong Ok. She opened a bazaar. There Dong Seok met Tae Seop. They are both proud of what Dong Ok has become.
Home Young Chun and So Shim prepare dinner. The family wants to have a dinner party for Dong Seok. And Ssang Shik doesn’t know how to apologize to Dong Seok for punching him. Dong Seok arrived home too late. His co-workers took him for drinks as goodbye party. When he came home, Dong Seok and Hae Won are watching Dong Won and Dong Ju’s video.
After watching the video, Dong Seok went out. He saw Dong Hui sitting on the bench in front of Mi Suk’s shop. He goes next to Dong Hui. Dong Seok asks Dong Hui to call him “ older brother” before he leaves for Seoul. Dong Hui refuses and wants to get drunk Dong Seok back to the house. But when Dong Hui gets up, Dong Seok pulls him back and hugs him.
Dong Seok:”I’ll come back.”
In Seoul, while going to see her doctor, Hae Won received a letter form So Shim, who can write now. Both Dong Seok and Hae Won are reading So Shim’s letter. She was telling them that Tae Seop got a job. Ssang Ho hired him at the family restaurant. But the reason So Shim write was to tell Dong Seok that Dong Hui called him “older brother”. Dong Hui made his mother promise him that she will not call Dong Seok to tell him so she write. Dong Seok is so happy to hear that Dong Hui sees him as an older brother. He’s been waiting for so long for Dong Hui to call him “older brother”.
While Dong Seok and Hae Won were reading So Shim’s letter, Dong Hui called. He wanted to know when they will arrive in Gyeong Joo. But when Dong Seok asks him if he misses him so much, Dong Hui got shy and hung up.
Ma Ri came to see Dong Hui. Both family accepted their relationship and they will get married soon. When Dong Hui went to Ma Ri, she was crying. Before coming to see Dong Hui, Ma Ri went to see Young Chun. Ma Ri wanted Young Chun to meet her parents, since Young Chun is his birth mother. But Young Chun scolded her saying that for her is good enough to see Dong Hui happy. Young Chun feels like is not appropriate for her to meet Ma Ri’s parents or participate at Dong Hui and Ma Ri’s wedding.
Later, Dong Hui went to see Young Chun. He tells Young Chun that in this life she can’t be his mother, at the wedding she can’t sit on the groom’s site and after So Shim will die, he will not call Young Chun “ mom”. But Dong Hui asked Young Chun that in the next life to be again his mother and to keep him.
Before going home, Dong Seok and Hae Won met with Dong Tak and Hae Ju. Now Dong Tak is a big actor. Fans follow him. Hae Ju went to auditions too.
They’ve lived happily ever after!