It's Friday. Music Bank day. 2PM and Infinite are competing for first place. Nervous, Dongwoo's bladder can't take the pressure, compelling him to run to the bathroom at the worst possible time, moments before the big reveal. Almost crashing into Nichkhun on the way, they both barge through the door, accidentally knocking down an 'out of order' sign, not knowing that the lock on the bathroom door has been acting up all day.