2. Episode 2

Han Yun-a's attempt to prove her worth to the household backfires. A filming delay forces Lee Jun-ki to live in scary costume makeup for 24 hours.

3. Episode 3

Kang Seo-jin learns that her crush is just as imperfect as she is. Jun-ki makes a painful sacrifice for a movie role. Yun-a reveals her life's dream.

4. Episode 4

An embarrassing photo of Jun-ki goes viral, but leads to an opportunity. Yun-a tells her housemates about her past. Seo-jin interviews for a job.

5. Episode 5

A text message mishap threatens Bong Du-sik's chances with a new crush. Yun-a and Kang Dong-gu get the flu and are quarantined in a tent.

6. Episode 6

A fellow culinary student takes an interest in Yun-a. To buy more time to pay the rent, Jun-ki tells a lie that snowballs into a sudden engagement.

7. Episode 7

Misfortune brings Min Su-a to the guesthouse. Du-sik runs into his first love. Desperate to pay back the landlady, Jun-ki accepts a questionable job.

8. Episode 8

As Du-sik tries to express his feelings to Yun Mal-geum, Dong-gu struggles to hide his from Yun-a. To earn cash, Jun-ki tries his hand at meokbang.

9. Episode 9

Dong-gu runs into problems while babysitting Han Sol. After hurting Seo-jin's chance at getting a journalism job, Jun-ki sets out to make things right.

10. Episode 10

Seo-jin and Jun-ki agonize over what happened the previous evening -- but for totally different reasons. Dong-gu comes to a realization about Yun-a.

11. Episode 11

Yun-a leaves Dong-gu with more questions than answers. Jun-ki hides from a UFC fighter whose girlfriend he stole. Su-a's undercover work pays off.

12. Episode 12

Jun-ki tries to view Seo-jin as a woman, but memories of her as a girl get in the way. A jealous Dong-gu challenges Song Hyeon-jun to a duel of sorts.

13. Episode 13

Su-a ropes Du-sik into helping her launch an online shopping mall. From a distance, Dong-gu spots his sister kissing a man, and demands to meet him.

14. Episode 14

Jun-ki and a co-worker compete to star in a commercial. Du-sik helps Su-a practice her driving skills. Dong-gu gets a lunch date with Yun-a.

15. Episode 15

While Seo-jin and Jun-ki secretly go on a weekend getaway together, the rest of the Waikiki crew visit another guesthouse to get ideas for their own.

16. Episode 16

When Dong-gu refuses to speak to his sister, she declares she's going on a shaving strike until he does. Hyeon-jun has something to tell Yun-a.

17. Episode 17

Dong-gu and Yun-a go on their first official date. A romantic declaration that Du-sik makes to a new Ukrainian houseguest gets lost in translation.

18. Episode 18

An obsessed fan begins to stalk Jun-ki. Dong-gu and Yun-a struggle to have their first kiss. Su-a gives Du-sik good -- and bad -- dating advice.

19. Episode 19

Su-a starts her own fashion line. Jun-ki is given a publicity stunt to perform -- involving a pole dance. Yun-a meets her idol, a rapper.

20. Episode 20

Sol's father begs Yun-a to forgive him. Seo-jin asks Jun-ki for time to reconsider their relationship. Su-a makes a confession to Du-sik.