S1, E246: The members join the environmental workers and zookeepers for cleaning duty; Kim Suk Hoon joins Team OB with Jae Seok, Haha and Woo Jae, and they clean the streets of Jongno.

Starring Kim Seok-hun
S1, E246: The members join the environmental workers and zookeepers for cleaning duty; Kim Suk Hoon joins Team OB with Jae Seok, Haha and Woo Jae, and they clean the streets of Jongno.