Plot: "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