In a different world, five princes and the fox become precious to each other, a strong promise uniting them. When they lose memories of their past and fall into reality, the princes start to recall their promise to the fox: "even if we part from each other, let's meet here again."

Fantasy, Music, Adventure, Drama

Yeonjun, Soobin, Beomgyu, Taehyun, HueningKai, Kang Gil-woo