Inspired by the famous Chinese novel Journey to the West, in each season every cast member was dressed as a certain character and traveled to places on a mission to find mystical dragon balls. They must complete a task in order to receive dragon balls.
In Season 5, Kang Ho-dong, Eun Ji-won, Lee Soo-geun, Ahn Jae-hyun, Mino and P.O (replacing Kyuhyun) travel to Hong Kong and Hokkaido. A totally new set of characters (Chucky, Kaonashi, Dracula, Chinese Vampire, Grim Reaper & Virgin Female Ghost) are introduced. The season started on 30 September 2018.
In this season, the show was filmed in South Korea with the Korean traditional fairytale theme, Tale of Hengbu. Kang Ho-dong plays Heungbu's son; Lee Soo-geun plays the gourd; Eun Ji-won plays the swallow; Cho Kyuhyun plays Nolbu's wife; Song Min-no plays Heungbu and P.O plays Nolbu.