A broadcast insider told TV Report on the 13th, "Jo In Sung and Roy Kim have been filming '1N2D' in Muui Island since the 12th." The show's rep later confirmed this lineup.
Jo In Sung and Roy Kim will appear as a close friend of Cha Tae Hyun and Jung Joon Young, respectively. Viewers are especially anticipating Jo In Sung's return to variety shows in two-and-a-half years as well as the onscreen reunion of Roy Kim and Jung Joon Young, who have been close friends since their 'Superstar K4' days.
Chun Myung Hoon, Kim Jae Dong, and Kim Ki Bang are also reported to join them for this upcoming special so stay tuned!