Episode 1 - Episode 1

Lee Su-jin's joyless marriage to Kwon Do-hun -- with whom she was once deeply in love -- reaches a breaking point when he refuses to have a baby.

Episode 2 - Episode 2

While Do-hun hides secrets from Su-jin, she considers an unorthodox idea to try and force him into a speedy divorce.

Episode 3 - Episode 3

Brian Jeong and Son Ye-rim cook up a scenario for Su-jin's divorce project, and Do-hun spends time with his mother-in-law.

Episode 4 - Episode 4

Moving her plan forward, Su-jin gets Do-hun to agree on a fishing trip with her. Brian stands up Ye-rim for dinner.

Episode 5 - Episode 5

With his symptoms accelerating, Do-hun knows he must give Su-jin what she wants -- or risk her finding out about his illness.

Episode 6 - Episode 6

Forgetting he needs to stay away, Do-hun heads to Kwon A-ram's kindergarten. Mun Kyeong-hun carves out a place in Su-jin's life.

Episode 7 - Episode 7

Su-jin worries that Do-hun has reappeared to take A-ram away from her. Meanwhile, Brian and Ye-rim come across each other on a film set.

Episode 8 - Episode 8

For the first time in years, Do-hun and Su-jin come face-to-face. Choe Hang-seo and Baek Su-a throw a wedding celebration. Brian meets Ye-rim's fiancé.

Episode 9 - Episode 9

Do-hun's proposal for launching a sugar-free chocolate bar falls through. Su-jin locks herself away in her apartment, worrying her friends.

Episode 10 - Episode 10

Jo Mi-kyeong and her mother disapprove, but Su-jin decides she wants to be by Do-hun's side -- and brings A-ram to him.

Episode 11 - Episode 11

Do-hun remembers how he fell in love with Su-jin, who packs up his bags to take him back to the house. Ye-rim makes her choice about Brian.

Episode 12 - Episode 12

Losing more of himself each day, Do-hun works on creating good memories with A-ram, and Brian offers to film a video to preserve them.

Episode 13 - Episode 13

When Do-hun's condition reaches new lows, Su-jin recounts their story to him. The patent for his chocolate bar is found to have been stolen.

Episode 14 - Episode 14

Su-jin plays along with Do-hun, who thinks he is in his 20s -- but runs into trouble when he gets jealous of Kyeong-hun.

Episode 15 - Episode 15

Do-hun's Alzheimer's disease progresses, erasing even Hang-seo. A-ram wonders why they can't play together -- and Su-jin must explain why.

Episode 16 - Episode 16

To A-ram's delight, Do-hun attends her kindergarten event, and the family goes on its first vacation. The chocolate bar relaunches under a new name.

Episode 17 - Episode 17

Episode 18 - Episode 18

Episode 19 - Episode 19

Episode 20 - Episode 20

Episode 21 - Episode 21

Episode 22 - Episode 22

Episode 23 - Episode 23

Episode 24 - Episode 24