Cha Hun

Les présentateurs de l'émission sont au nombre de 7, ils affrontent seul ou ensemble les invités afin de gagner la « course finale » et de gagner des « Running Ball ». Ces dernières sont utiles pour éviter tout genre de punitions qui varient selon les épisodes. Les présentateurs sont la plupart du temps mélangés avec les invités pour rendre les défis plus équitables étant donné que les présentateurs connaissent déjà à l'avance certains jeux contrairement aux invités.

Having never been involved in a long-term relationship, Ha-yoon was hoping that her current boyfriend, Nam Tae-ryeon, would be the one to change all of that. But when he announces he wants to break up with her before they even reach their 100th day, Ha-yoon refuses to accept her fate without a fight. Determined to make this relationship last, Ha Yoon suggests a month-long “break-up grace period” in which she and Tae-ryeon are allowed to spend as much time apart as they want, without calling things off completely. Agreeing to her terms, Tae-ryeon and Ha-yoon draw up a contract in which the terms of their grace period are clearly stated. While Tae-ryeon goes about his life, Ha-yoon somehow finds herself signing an entirely different contract with her best friend and college colleague, Kang-jin.

When it comes to love, Ha Joon is about the farthest thing from an expert that you can get. With almost no dating experience, the closest Ha Joon has ever gotten to having a long-term relationship is the one he has with his dog, Meongoo. Now in his twenties, Ha Joon is starting to feel that raising a dog is great, but it would be nice to have an actual human by his side. Terrified of going through his entire twenties without a proper relationship, Ha Joon agrees to visit a dating consultation company with some of his college friends. While there, Ha Joon finds himself crossing paths with Do Hee, a pretty young lady who looks exactly like his first love. Incredibly unlucky when it comes to love, Do Hee's only true companion is her cat Anna. Even so, Do Hee refuses to give up on love. Bonding over their mutual affection for their pets, Ha Joon and Do Hee find themselves drawing even closer, but is that one connection enough to spark love's eternal flame?

Producer duo Jeong Hyeong Don and Defconn unite four members from different K-pop groups, Jackson (GOT7), Sungjae (BtoB), N and Hyuk (Vixx) and create a new group, Big Byung, and produces a hit with them. (In the second season a new group is formed, but Big Byung makes a comeback with a second release in their appearance.)

A South Korean radio show created by MBC Radio specially for idols.

A survival audition program featuring fierce competition and friendship between various boy bands! The winners will have the chance to debut in a joint Korean/Japanese idol band under FNC Entertainment. Co-produced by Japan/South Korea and featuring established artists from Japan and South Korea as team producers.

Jung Hyung Don and Defconn recruited talents to form their own idol group. Their first idol unit group is made up of BtoB's Yook Sungjae, GOT7's Jackson and VIXX's N and Hyuk. In season 2 a new unit group is created with G.na, After School's Lizzy, 4minute's Kwon Sohyun and Kara's Heo Youngji.