Two women working in the same industry with the exact same name keep getting their lives entangled both professionally and personally.
Episode 1
When Hae-Young's wedding falls apart, her family's joy turns into disappointment. Also dealing with rejection, Do-Kyung feels a sense of déjà vu.
Episode 2
Do-Kyung treats Hae-Young to a drink to thank her for finding his wallet. When Hae-Young forgets her phone, Do-Kyung brings it to her the next day.
Episode 3
Hae-Young moves into her own apartment only to find out Do-Kyung is living next door. Surprised and dismayed, Do-Kyung urges her to leave.
Episode 4
Hae-Young sees the other Hae-Young running in a marathon. When Do-Kyung hears this, he's bewildered that his vision has become a reality.
Episode 5
Hae-Young's bra pad falls out when she hugs Do-Kyung. Feeling better, Do-Kyung takes Hae-Young out to dinner only to run into the other Hae-Young.
Episode 6
Do-Kyung has a vision of Hae-Young breaking a glass window. Hae-Young's mother suddenly finds Do-Kyung in her daughter's room.
Episode 7
Hae-Young gives Do-Kyung a boxed lunch she made with her parents. Other employees in Do-Kyung's office are amazed at how delicious it tastes.
Episode 8
Do-Kyung sees the other Hae-Young, who suggests they start anew. Meanwhile, Tae-Jin suddenly appears in front of Hae-Young.
Episode 9
Do-Kyung has a startling vision where he kisses Hae-Young. Meanwhile at work, Hae-Young discovers she's older than the other Hae-Young.
Episode 10
After a fight, Do-Kyung ends up kissing Hae-Young. However, when he fails to contact her later, the impatient Hae-Young takes a call from Tae-Jin.
Episode 11
During a car ride back to Seoul, Do-Kyung decides to take things further with Hae-Young. Meanwhile, Tae-Jin visits Hae-Young's parents to apologize.
Episode 12
Hae-Young drunkenly calls into a radio station when she learns of Do-Kyung's bad behavior. She accidentally says her real name on air.
Episode 13
Hae-Young gets soaked on an outing with a friend. She returns home, resolved to forget her past. Suddenly, Do-Kyung drops by for a visit.
Episode 14
Do-Kyung and Hae-Young get back together. The doctor is delighted to hear this, telling Do-Kyung that his future has changed.
Episode 15
Do-Kyung and Hae-Young fall deeper in love. When Do-Kyung has a vision including Hae-Young's voice, he senses that his future is changing.
Episode 16
Do-Kyung has a vision where he's nearly hit by Tae-Jin's car. He's encouraged not to give up, so he brings flowers to Hae-Young's office.
Episode 17
Do-Kyung and Hae-Young affirm their love for one another. Later, Jin-Sang goes to the sauna with Do-Kyung and talks about his feelings for Soo-Kyung.
Episode 18
Do-Kyung confesses everything to Hae-Young and they go to see his doctor. Hae-Young tells her parents she wants to live with him.
