Super Junior-T are famous in South Korea for their song "Rokkugo", but Sungmin constantly feels overshadowed because of his lack of talent and good looks.
Offended by their lack of faith, Sungmin stops skipping and shocks Leeteuk with his sudden reappearance, causing him to pass out.
One his way home he sees a woman (Enjel) being harassed by two men and decides to finally use his ability for a good deed.
Leeteuk punches him back and exclaims that Super Junior-T is falling apart because of his aloof behavior, and that he should see what is in front of him.
Sungmin realizes the skipping rope had caused him more harm than good, and ultimately he throws it into the Han River.
The next day, holding his pride over the humiliation of knowing Enjel's secret, Sungmin still decides to leave Super Junior-T, much to the dismay of the members.
As Sungmin walks away, Leeteuk tells him that they had promised to stay together till the end, and that Super Junior-T is nothing without him.