Bang Yongnam, a well-known performer of South Korea, needs to take a personal leave from the idol life. But, he is right in the middle of promotions... so...

Two trainees of SM Ent. are about to debut as a new duet group named "Devil&Angel." Obviously as part of one of the major companies, the pair knows the other groups, such as SuJu , SNSD, etc. However, even before they debuted they also met some other groups that come from a different company. The groups are known as B.A.P and SECRET from TS Ent.