SM Entertainement, YG Ent, TOP Media and FATALISIM Project decides to have a trainee exchange program. Kim Ki Bum 'KEY', Park Jung Su 'Lee Teuk', Kwon Ji Young 'G .Dragon' , Lee Seung Hyun 'Seung Ri', Bang Min Soo 'CAP' and Lee Byung Hun 'L.Joe' are being trancefered to FATALISIM for 2 months. On their first week, they meet some trainee girls and twists happens... What will happen?