The BEST Episodes of Thirty But Seventeen

Every episode ever - ranked by fan votes!

Last Updated: Jun 6, 2020

Network: SBS (KR)

Gong Woo-Jin is a 30-year-old single man and he works as a set designer. Due to a trauma he experienced 13 years ago, he does not want to have a relationship with others. When Woo Seo-Ri was 17, she fell into a coma. 13 years later, she wakes up from her coma. Her mental age is still that of a 17-year-old, but she is now 30-years-old. Gong Woo-Jin and Woo Seo-Ri get involved with each other and fall in love.

It’s Not My Fault

#1 - It’s Not My Fault

Season 1 - Episode 26 - Aired Sep 10, 2018

After finding Seo Ri’s notebook at her flower shop, Mi Hyun calls the hospital she was hospitalized in to ask whether she had woken up. However, the nurse refuses to give out patient information, saying that she needs to know Mi Hyun’s relation to her. Woo Jin personally visits her and asks whether she is Seo Ri’s aunt or not. However, Mi Hyun does not look back and tells him that he got the wrong person.

star 9.21
14 votes
Another Door to Happiness

#2 - Another Door to Happiness

Season 1 - Episode 32 - Aired Sep 18, 2018

Rin Kim has invited Seo Ri to come to Berlin, Germany and attend the music school she is currently in. Although Seo Ri is in a dilemma, the people around her tell her that this is a once-in-a-lifetime chance that she should not let go of. Furthermore, even Woo Jin tells her not to worry about him. The day of Seo Ri’s departure, Woo Jin comes back home and feels Seo RI’s vacancy. In his room, he finds a letter written by her to him and reads it.

star 9.14
14 votes
Don’t Think, Feel

#3 - Don’t Think, Feel

Season 1 - Episode 24 - Aired Sep 4, 2018

Tae Rin is upset after hearing Mr. Byun, the conductor, tell her to love playing music instead of comparing herself to Seo Ri. Seo Ri approaches Tae Rin and apologizes to her for changing her mind about performing and joins the production team to help prepare for the event. Meanwhile, the Taesan High School rowing team saddles up and heads out to the 15th National Clear Water Boat Race with high hopes of winning a medal.

star 9.08
13 votes
It Wasn’t Your Fault

#4 - It Wasn’t Your Fault

Season 1 - Episode 29 - Aired Sep 17, 2018

Woo Jin confesses everything to Seo Ri and tells her that it is his fault that she is in a coma. However, Seo Ri tells him that she knew him even before he knew her and tells him the whole story. The next day, Woo Jin finds out that Chan has taken Seo Ri out.

star 9.07
14 votes
You’re My First Love

#5 - You’re My First Love

Season 1 - Episode 30 - Aired Sep 17, 2018

Chan confesses his feelings to Seo Ri but tells her that it is all in the past. He comforts her by saying that he will recover from this heartbreak quickly and asks her to take care of his uncle just like now. Meanwhile, Woo Jin tells Seo Ri that it was not her uncle and aunt who had been paying for her hospital bills.

star 9.07
14 votes
The Truth

#6 - The Truth

Season 1 - Episode 28 - Aired Sep 11, 2018

Seo Ri finds a drawing in the storage room and realizes that it is a drawing of herself. She asks Chan where Woo Jin is, saying that she was posing the same way as she is in the drawing not long before the accident happened, and that Woo Jin might have known her in the past. Meanwhile, Woo Jin is nowhere to be seen.

star 9.00
13 votes
Intermission

#7 - Intermission

Season 1 - Episode 16 - Aired Aug 14, 2018

In order to cheer Seo Ri up, Woo Jin takes her to the ocean. There, Seo Ri tells him about how she was unconscious for 10 years and that although she is physically an adult, she does not feel that way at all and that her age feels strange for her. Upon hearing this, Woo Jin feels sorry and guilty for the things that he said and how he treated her.

star 8.93
15 votes
You Like Her, Don’t You?

#8 - You Like Her, Don’t You?

Season 1 - Episode 17 - Aired Aug 21, 2018

Woo Jin’s older sister and Chan’s mother, Gong Hyun Jung, surprises everyone by dropping by Woo Jin’s place. Worried that his mom would get mad for allowing a stranger to live at their place, the boys decide to lie to her and say that Seo Ri is their housekeeper. However, Seo Ri feels very uncomfortable about lying and tries her best not to be seen by her.

star 8.75
12 votes
A True Adult

#9 - A True Adult

Season 1 - Episode 18 - Aired Aug 21, 2018

Woo Jin decides not to sell the house. He visits his father in Jeju Island and persuades him not to sell it by promising that he won’t go abroad for months ever again. He decides to open his heart more, and the people around him notices how he has changed. Meanwhile, Seo Ri and Hee Su get stuck on an island and cannot sail back home.

star 8.73
15 votes
Feeding the Fish

#10 - Feeding the Fish

Season 1 - Episode 15 - Aired Aug 14, 2018

While in the midst of looking for a place to stay, Seo Ri is given the offer to stay at Hyun’s cousin’s place and feed her fish. Since she can use everything at the house for free and not have to pay rent, she is exhilarated and takes up on the offer. However, Chan is devastated to hear that she will be moving out since he has plans to confess his feelings for her.

star 8.71
14 votes
Performing at the Festival

#11 - Performing at the Festival

Season 1 - Episode 20 - Aired Aug 28, 2018

While working, Woo Jin notices that a worker is trying to introduce his son to Seo Ri. It keeps bothering him, and he tries his best to end their conversation. Meanwhile, Seo Ri decides to take courage and perform at the festival alongside Professor Shim Myung Hwan, and Tae Rin is not happy upon hearing the news.

star 8.71
14 votes
Bar 7

#12 - Bar 7

Season 1 - Episode 13 - Aired Aug 13, 2018

Woo Jin confesses to his doctor that Seo Ri drags him out of his comfort zone and forces him to re-evaluate himself. He also says that up until recently, he was fine ignoring everyone around him and minding his own business, but Seo Ri makes him look back at himself. Meanwhile, Chan plans to confess his feelings for Seo Ri after he wins at the nationals and focuses on practicing for it.

star 8.69
16 votes
Elegant Ghost

#13 - Elegant Ghost

Season 1 - Episode 3 - Aired Jul 24, 2018

Seo Ri meets Woo Jin and Chan at her uncle’s house. She is told that her uncle and aunt no longer live there, and that they left in a hurry. Seo Ri leaves the home and wanders the streets. Woo Jin cleans up his look and returns to work. He worries that Deok Gu hasn’t been eating or sleeping and takes him to the hospital. Meanwhile, Seo Ri continues to look for her aunt and uncle.

star 8.64
14 votes
The Room Under the Stairs

#14 - The Room Under the Stairs

Season 1 - Episode 4 - Aired Jul 24, 2018

Woo Jin, Chan, and Jennifer all hear a strange noise in the middle of the night. They go downstairs and are surprised to see something crawling out of the bookcase. Seo Ri ends up spending the night at Woo Jin’s home and tells Chan about how this house came to be. Meanwhile, Hyung Tae returns to Seoul to find that Seo Ri has woken up and disappeared from the hospital.

star 8.64
14 votes
Frankly and Sincerely

#15 - Frankly and Sincerely

Season 1 - Episode 31 - Aired Sep 18, 2018

Mi Hyun musters up the courage to approach Seo Ri. She gives her Hyun Gyu’s diary that he wrote to Seo Ri while he was taking care of her. Furthermore, it turns out that they had gotten a divorce as a means of protecting Seo Ri’s house from the bankruptcy.

star 8.64
14 votes
Comfort

#16 - Comfort

Season 1 - Episode 23 - Aired Sep 4, 2018

Seo Ri explains to Woo Jin she’s okay with being used as an enticement for tickets because to her, the chance to play the violin on stage again and the chance that her uncle, who threw her away, might see her and find her, is a small price to pay. Upset and disheartened at Woo Jin for trying to stop her, Seo Ri runs to the rehearsal hall and practices throughout the night to feel better. Woo Jin has a restless night trying to find where she is.

star 8.62
13 votes
It’s All Because of Me

#17 - It’s All Because of Me

Season 1 - Episode 27 - Aired Sep 11, 2018

Woo Jin realizes that the girl he liked was actually Woo Seo Ri. He sobs uncontrollably while thanking her for being alive. However, Seo Ri is very confused as to why he is acting this way. Meanwhile, Chan is shocked when a nurse addresses Woo Jin as Seo Ri’s boyfriend. However, he tells himself that it must all be a big misunderstanding.

star 8.62
13 votes
Did I Do Something Wrong?

#18 - Did I Do Something Wrong?

Season 1 - Episode 12 - Aired Aug 7, 2018

During the team dinner, Seo Ri overdoes it on the alcohol and returns home drunk. In her drunken state, she walks into Woo Jin’s room, thinking it’s hers, and sleeps there. The next morning, she wakes up to find herself lying face to face with him and believes it is a dream. Meanwhile, Woo Jin tries his best to ignore Seo Ri but confesses that it seems difficult to block her out.

star 8.60
15 votes
I Want My Time Back

#19 - I Want My Time Back

Season 1 - Episode 14 - Aired Aug 13, 2018

After finding out that Mr. Kang invited Seo Ri over to a bar for some dinner and drinks, Woo Jin heads to that place as well. While trying to protect Seo Ri from him, Woo Jin drinks quite a bit of wine and gets drunk. In his drunken state, he starts to act weirdly, hide, and run away from Seo Ri. Seo Ri has no idea why he is acting this way.

star 8.60
15 votes
Where Are My Uncle and Aunt?

#20 - Where Are My Uncle and Aunt?

Season 1 - Episode 2 - Aired Jul 23, 2018

After waking up from her coma, Seo Ri is shocked to find out that she is 30 years old. Woo Jin gets a call from his sister telling him to come back to Seoul. Seo Ri works hard to rehabilitate her body and get back her health. Meanwhile, Seo Ri continues to ask the nurses about Su Mi and her aunt and uncle.

star 8.46
13 votes
The Lands of the Unknown

#21 - The Lands of the Unknown

Season 1 - Episode 5 - Aired Jul 30, 2018

Hyung Tae is looking everywhere for Seo Ri. Seo Ri hears that the hospital is looking for her, but she doesn't have plans to go back. When Seo Ri learns that Woo Jin used to study in Germany, she becomes very interested in him.

star 8.46
13 votes
Replacement

#22 - Replacement

Season 1 - Episode 6 - Aired Jul 30, 2018

Seo Ri is disappointed to find out that she didn’t make the cut, and Chan tries to console her by saying that good days will certainly come in the future. Furthermore, she invites her to have pot tteokbokki with him, and this instantly brings her spirits up. However, she gets a call from the violin academy, asking whether she could fill in as a replacement for 2 to 3 weeks. Exhilarated, she tells everyone about this good news.

star 8.46
13 votes
Flashbacks

#23 - Flashbacks

Season 1 - Episode 10 - Aired Aug 6, 2018

Both Chan and Woo Jin slowly start developing feelings for Seo Ri. However, unlike Chan who accepts and enjoys the way he feels toward her, Woo Jin seems to be anxious about the fact that he may be tangled up in someone’s life again. One evening, he spots Seo Ri looking at the moon and making a distinct hand motion that he remembers from the past. Suddenly, he starts panicking, and the flashbacks from long ago come back.

star 8.46
13 votes
Moonlight

#24 - Moonlight

Season 1 - Episode 9 - Aired Aug 6, 2018

While talking with his client at a coffee shop, Woo Jin sees Seo Ri wearing makeup and entering what it seems to be a bar. He hurriedly ends the meeting and rushes inside the bar, shouting her name. The bouncers drag him out, and he sees Seo Ri outside. She asks him whether he went in there because he was worried about her, but Woo Jin continues to avoid answering her.

star 8.43
14 votes
Art Object

#25 - Art Object

Season 1 - Episode 19 - Aired Aug 28, 2018

In an empty, dark house, Seo Ri and Woo Jin share some time together. He shows her the free tteokbokki coupon that he won and asks her if she wants to have it with him. Suddenly, he gets a call from Deok Su and finds out that Chan has fainted. He rushes out to see him and leaves Seo Ri worried.

star 8.43
14 votes