01. 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.
02. 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.
03. 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.
04. 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.
05. 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.
06. 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.
07. 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.
08. 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.
09. 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.
10. 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.
11. 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.
12. 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.
13. 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.
14. 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.
15. 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.
16. 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.