Season 2
Jae-suk, Kwang-soo and Yu-ri are sent into the space for a mission. The three members must survive four hours in the unknown!
Stress Zone
The first mission is to stay healthy. However, enemies are lurking around.
Save Zone
The members enjoy a peaceful space of healing which soon turns into disaster.
Automatic Zone
The members go on an adventure in a cosy AI bed. However, the machine goes haywire.
Virus Zone II
An unidentified presence appears before the members who have returned as lifeguards.
Mystery Zone
The members enter the lively Hwayang Village. However, mysterious events continue to follow them.
Play Zone
A PLAY ZONE is created for the members who have been through a lot. A lot of memorable childhood games are gathered in a questionable area. If they cannot avoid it, they might as well enjoy it. The spin-chilling fun of holding out begins!
Analog Zone
The members have to survive alone in an underground bunker with no forms of communication.
Battle Zone
The members must destroy the enemy's base through a battle.