The best cruise in Korea invited the Yongjin Taekwondo team, which has amassed ten million views on YouTube and is growing in popularity, and boarded to perform. But what awaits them after their performance is a ?! There is still a week until the cruise gets to land. On top of the sea, where there is nowhere to go, the cruise turns into a prison where the people are locked up in an instant, and the fight to survive the zombie chase begins!