Three very different young men – Dong Goo (Kim Jung Hyun), who dreams of becoming a film director, Joon Ki (Lee Yi Kyung), an eccentric actor who performs to make a living, and Doo Shik (Son Seung Won), a freelancer writer who fiddles around doing nothing most of the time - open a guest house named “Waikiki” in Itaewon, where many foreigners come to stay. Although they have no clue how to run it, they’re eager to earn money to pay for the production of their upcoming film. They are joined by Dong Goo (Kim Jung Hyun)’s younger sister, Seo Jin (Ko Won Hee), who actually manages the household in Waikiki, single mother Yoon Ah (Jung In Sun), who has made an unexpected entrance at the guest house with her baby; and Dong Goo (Kim Jung Hyun)’s ex-girlfriend Soo Ah (Lee Joo Woo).