I Know What You Did Last Summer
As high schoolers, Kook Yeon-su and Choi Ung give a documentary crew a peek into their lives. Ten years later, they've gone their separate ways.
Series
Our Beloved Summer
그 해 우리는
“Let's film the documentary again.”
2021EndedSouth Korea60 min
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What's it about?
Years after filming a viral documentary in high school, two bickering ex-lovers get pulled back in front of the camera — and into each other's lives.
Where to stream?
Netflix
Checked 08/22/2026 · last check was a while ago · United States catalog · account required.
Available (check outdated)
Availability data partly provided by JustWatch via TMDB.
Trailers & videos
Our Beloved Summer | Official Trailer | Netflix [ENG SUB] — Trailer · English · official · YouTube
SBS 〈그 해 우리는〉 4분 하이라이트 영상 공개! #그해우리는 #SBSCatch
[티저1] SBS 새 월화드라마 '그 해 우리는' 최우식X김다미, 첫사랑 역주행 로맨스 케미 폭발! #그해우리는 #SBSCatch
[티저2] 최우식X김다미, 10년 만에 재회한 헤어진 X!! 첫사랑 역주행 로맨스 '그 해 우리는' 12월 6일 첫 방송💛 #그해우리는 #SBSCatch
[티저3] 최우식❤김다미, 이별 후 재회로 더 설레는 첫사랑 역주행 로맨스 '그 해 우리는' 12월 6일 첫 방송💙 #그해우리는 #SBSCatch
5 videos — they play on each provider's site
Cast
Choi Woo-shik
최우식
Choi Woong
16 episodes
Kim Da-mi
김다미
Kook Yeon-su
16 episodes
Kim Sung-cheol
김성철
Kim Ji-woong
16 episodes
Roh Jeong-eui
노정의
NJ
16 episodes
Ahn Dong-gu
Gu Eun-ho
16 episodes
Jeon Hye-won
전혜원
Jung Chae-ran
16 episodes
Park Jin-joo
박진주
Lee Sol-i
16 episodes
Lee Jun-hyuk
이준혁
Jang Do-yul
16 episodes
Cha Seung Yeup
Kang Ji Woon
16 episodes
Lee Seung-ryong
이승룡
Im Tae-hoon
16 episodes
Kwak Dong-yeon
곽동연
Noo Ah
4 episodes
Lee Rang-seo
이랑서
Volunteer
1 episode
Moon Ha-yeon
문하연
Volunteer
1 episode
13 people — scroll sideways
Crew
Producer
Han Hye-won
Writer
Lee Na-eun
Director
Kim Yoon-jin
Music
Nam Hye-seung
Episodes
2 seasons · 17 episodes in total
Season 1 — 16 episodes · from 12/06/2021
Page 1 of 1 · Episodes 1–16
1792 Days of Summer
Yeon-su and Ung reunite for the first time in five years when she shows up at his door with a proposal to work together on an art project.
10 Things I Hate About You
Eager to film a follow-up documentary, Kim Ji-ung sets out to persuade Yeon-su and Ung. But getting them to agree proves to be a challenge.
The Boy, or the Girl, We Liked Then
Yeon-su and Ung's squabbles begin even before the cameras start rolling. Ung refuses to dignify an infuriating plagiarism accusation with a response.
1 guest appearance
Kwak Dong-yeon (Noo Ah)
A Secret That Can’t Be Told
Ji-ung recounts how he and Ung became friends in their childhood. Yeon-su wants to apologize to Ung, but can't quite bring herself to do it.
Pride and Prejudice
Ung wakes up on the morning of the live drawing show with a few gaps in his memory. Watching him at work, Yeon-su sees an unfamiliar side of him.
1 guest appearance
Kwak Dong-yeon (Noo Ah)
Catch Me If You Can
Ung and Yeon-su attempt to run away from having to see each other, but wind up in the same place anyway. NJ stands up to her cyberbullies.
2 guest appearances
Lee Rang-seo (Volunteer), Moon Ha-yeon (Volunteer)
Before Sunset
A forced vacation commences for Yeon-su and Ung when the documentary crew traps them at a mountain retreat. Awkward tensions run high between the pair.
Just Friends
When she doesn't hear from Ung after their return from the retreat, Yeon-su decides to confront him. He has a disorienting response for her.
Hello, My Soul Mate
With his mother back in town, Ji-ung stops going home so he can avoid seeing her. Watching NJ and Ung go on a date vexes Yeon-su to no end.
Our Nights Are More Beautiful Than Your Days
Ahead of the final day of filming, gossip about Ung and NJ causes a stir. Ji-ung receives pointed advice about his documentary edit.
Begin Again
For Ung and Yeon-su, a new beginning is equal parts sweet and clumsy. When NJ bumps into Ji-ung, she invites him out for a drink.
Love Actually
After soliciting dating advice from a co-worker, Yeon-su acts out of character in front of Ung. Meanwhile, Ji-ung takes some time to himself.
Life Is Beautiful
Ung asks Yeon-su a question that's difficult for her to answer. As Lee Sol-i deals with an unwanted surprise in her bar, Gu Eun-ho happens to swing by.
Three Idiots
A noticeably down Ji-ung pours himself into his work instead of going home. Ung waits for Yeon-su to come and see the final night of his art exhibit.
1 guest appearance
Kwak Dong-yeon (Noo Ah)
Our Beloved Summer
Ready to pursue his next dream, Ung sets his sights on studying overseas. When he asks Yeon-su to join him, she has a tough decision to make.
1 guest appearance
Kwak Dong-yeon (Noo Ah)
Image gallery
Posters (17)
Stills (27)
Images © their respective rights holders · Source: TMDB