1. Signal

While preparing for her wedding, Jin Ha-kyung deals with work headaches as Lee Si-woo refuses to give up on signals that point to an oncoming storm.

2. Sensible Temperature

Han Ki-jun's shameless requests infuriate Ha-kyung, who considers an overseas job opportunity. Si-woo shows up at the office on a two-week assignment.

3. In Between Seasons

A drunken encounter with Si-woo leaves Ha-kyung uncharacteristically disoriented. At work, her public clashes with Ki-jun continue.

4. Visibility

Si-woo's co-workers notice that he seems to have gotten on Ha-kyung's bad side. Chae Yu-jin writes a newspaper article criticizing the weather service.

5. Localized Heavy Rain

Ki-jun finds it difficult to let go of Yu-jin's lie. Unrest grows within Ha-kyung's team, and Um Dong-han struggles to focus at work.

6. Heat Island Phenomenon

Ha-kyung grows wary of Si-woo's secrets after running into him at a motel. News about her mother sends her hurrying to the hospital.

7. Ozone Warning

After an uneasy conversation with Yu-jin, Ki-jun seeks sage advice. While looking for a place to crash, Si-woo finds someone else in need of a home.

8. Discomfort Index

As temperatures boil over outside, so do emotions as another uncovered truth pushes the animosity between Si-woo and Ki-jun to new heights.

9. Dry Changma (Rainy Season)

Bothered to no end by the sight of Ha-kyung and Si-woo together, Ki-jun tails them on their day off. Meanwhile, Yu-jin's frustration balloons.

11. 1℃

When Ha-kyung chooses to send Si-woo far away on assignment, he doesn't hide his displeasure. Dong-han is elated when his daughter returns to see him.

12. Variation Area

Upon learning Si-woo's sustained an injury while working, his father causes a scene at the office. Ki-jun can't get a hold of Yu-jin.

13. Scenario 1, 2, 3

Relationship troubles abound as Ha-kyung tries to process what Si-woo wants, and Ki-jun and Dong-han set out to save their respective marriages.

14. Migratory Anticyclone

Gossip about Ha-kyung and Si-woo dating sets the office abuzz, much to their chagrin. Yu-jin is unable to celebrate being handed a coveted assignment

15. Ensemble

Ha-kyung is asked to keep a secret, Yu-jin grapples with a life-altering decision and Dong-han tries to make it to his daughter's birthday dinner.

16. Tomorrow's Answers

While a second wave of rumors about Ha-kyung and Si-woo spreads around work, those around them urge them to reconsider the status of their relationship.