Jung-seok hesitates when IU advises him to rap. Unsure if he can do it, his team seeks Dynamicduo's guidance. Later, his secret YouTube channel soars.

His stage debut is near, but Jung-seok faces a nervous setback — he can't rap. Now, it's up to Dynamicduo to coach him into hip-hop shape.

With the guitar slung over his shoulder, Cho Jung-seok is ready for his first on-stage performance as a singer. Will he win over the crowd?