"Sydney, here we come!" The Busan Boys visit the peaceful port city of Sydney, with shining waters and the sail-shaped Opera House! Four Busan Boys go on a working holiday to Sydney, Australia. Actors Heo Sung-tae, Lee Si-eon, Ahn Bo-hyun, and travel YouTuber Kwak Joon-bin (KWAKTUBE) unite under the name of their hometown, Busan. With beautiful scenes of nature, a high minimum wage, and English as the common language, Australia is a popular destination for working holidays. Will these four be able to achieve both their goals of finding a nice job and going on fun adventures? Join them on their journey as they explore Sydney, a city similar to yet different from Busan. The Busan Boys set off on a working holiday project, where they work hard and play even harder..