You know that feeling...? The feeling of when you first fall in love... No matter how hard you try, you just can't forget it...   This is how the story starts... Once upon a time, there lived six girls.

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?