In Running Man, everything is scripted but interaction between cast and guest are solid without scripted. Everything that be seem on variety show is a real deal. Han Namja, kim jongkook known as sparta but what happen when sparta meet girl on that show and involved heart feeling? 

Kim jongkook is one of the Prince of the Mom' Diary- My Ugly Duckling show with his mom also one of the panel. As usual, jongkook will invite guys to come to his house for shooting film or otherwise but what happen when jongkook's dongsaeng comes and invite Oh hayoung, one of Apink member but the case is, she bring out all her team member including her beauty fairy, son naeun that has secret intention of coming to his house!