Kim Kwang-kyu, who suffered from an unknown allergy and Shin Sung-woo, best friend of the same age, entered the fasting center. Will they be able to overcome the difficulties and finish the fasting experience safely? Kangnam is here and came to Korea with a dream of becoming a singer from Japan! What's Kangnams shocking bank account balance? The super-positive charm of Kangnam, that becomes best friends with strangers in five minutes make the members fall for him. He's a human vitamin who you can't help but love.