S01:É01 - S01:E01 - Episode 1
Min-young runs to the airport at the news that her five-year crush Sun-woo is coming. He kisses her.
S01:É02 - S01:E02 - Episode 2
Min-young feels betrayed, knowing the real reason behind Sun-woo's proposal. He suddenly disappears.
S01:É03 - S01:E03 - Episode 3
Digging what Jung-woo had left, Sun-woo finally finds a short note about the nine incense sticks.
S01:É04 - S01:E04 - Episode 4
Min-young returns from her honeymoon. Young-hoon is frightened upon reading an email from Sun-woo.
S01:É05 - S01:E05 - Episode 5
Young-hoon surprises when he meets Jung-woo, and Sun-woo realizes shocking reality from Min-young.
S01:É06 - S01:E06 - Episode 6
Sun-woo is lonely watching Min-young with Seo-joon. Jin-cheol explodes, and Sun-woo lights incense.
S01:É07 - S01:E07 - Episode 7
Sun-woo meets his past self and hears the news that his father will pass away in twenty minutes.
S01:É08 - S01:E08 - Episode 8
Sun-woo indiscriminately hits Jung-woo. After the news report, Min-young recites 'Joo Min-young'.
S01:É09 - S01:E09 - Episode 9
With Sun-woo's hopeless condition, Professor Youn dissuades the surgery. But Young-hoon forces it.
S01:É10 - S01:E10 - Episode 10
His father's death confuses Sun-woo. Sun-woo of 2013 sees a photo of Min-young in her wedding dress.
S01:É11 - S01:E11 - Episode 11
Sun-woo intentionally pours out harsh words to Min-young, but he feels a deep sadness afterward.
S01:É12 - S01:E12 - Episode 12
Min-young ends up fainting. Sun-woo carries her to the house and sees a note from his past self.
S01:É13 - S01:E13 - Episode 13
Sun-woo barely escapes from Chang-min. But he is stabbed by Chang-min while calling Jung-woo.
S01:É14 - S01:E14 - Episode 14
Sun-woo nervously answers a call from Min-young. Meanwhile, Jung-woo is surprised by new memories.
S01:É15 - S01:E15 - Episode 15
Sun-woo rushes to the hospital as Jung-woo isn't on the family trip. He witnesses a horrific sight.
S01:É16 - S01:E16 - Episode 16
Sun-woo becomes insensible as Jung-woo dies. Something shocking happens when incense sticks break.
S01:É17 - S01:E17 - Episode 17
With acute pain and a scar, Sun-woo feels the fear of death. And a new memory appalls Jin-cheol.
S01:É18 - S01:E18 - Episode 18
Min-young and Jin-cheol are surprised by the change in her surroundings and himself, respectively.
S01:É19 - S01:E19 - Episode 19
The wedding hall flips over at the news that Sun-woo disappeared. Then, Jung-woo heads to Jin-cheol.
S01:É20 - S01:E20 - Episode 20
Si-ah feels weird looking at fingers once crossed with Sun-woo. Receiving a pager, Sun-woo wonders.