Three men run a Waikiki-themed guest house in Korea, but their customer count is running low, which means their funds are too. A guest finally shows up, but unfortunately for the guys, it's a seemingly abandoned baby.
Yoon Ah tries to prove her worth to Dong Gu, who's currently more concerned with Su Ah. Joon Ki is stuck in costume makeup when the filming of his new movie is delayed.
Seo Jin falls into a depression when her dream abruptly dies. Meanwhile, Doo Shik's dream takes an inappropriate turn just as he develops heart eyes for a new coworker.
One of Yoon Ah's new classmates takes an interest in her, but Dong Gu is suspicious of his motives. Later, the two of them are given an ultimatum based on yet another lie.
Unable to find success on the big screen, Joon Ki considers a different kind of performance. Dong Gu and Doo Shik both try to come to terms with their crushes.
Joon Ki and Seo Jin argue about the previous night's events, but are not quite on the same page. Doo Shik and Su Ah team up to catch Su Ah's scheming ex.
When Su Ah's exuberant, yet fearsome brother shows up, everyone panics to cover up a lie meant to appease him. Doo Shik gives Dong Gu relationship advice.
An awkwardness develops between Seo Jin and Joon Ki. Dong Gu tries to make time to see Yoon Ah outside of his job, but his exhaustion catches up with him.
Seo Jin and Joon Ki take a secret trip while Dong Gu takes the rest of the Waikiki crew out for a spontaneous workshop. Unsurprisingly, neither of the trips go as planned.
Dong Gu disowns his housemates, feeling like they're all against him. Doo Shik and Su Ah end up in yet another smelly situation while Yoon Ah ends up in a sticky one.
Joon Ki is chosen to throw out the first pitch at a baseball game. Su Ah tries her hand at designing her own fashion line. Yoon Ah takes the 2018 baking technical exam.
In the final episode, the guest house is shaken to its core when Sol's father shows up, Joon Ki and Seo Jin question their relationship, and Su Ah is forced to confront her feelings for Doo Shik.