"Fly through the night sky           As time time for the moonight            I'll meet you in my dreams"    ​​​​​ After Eunha took away her own life, Sowon, Sinb, Yuju, Yerin and Umji try their best to cope with their loss, until they finally were able to meet their dearest friend...  In their dreams... ​​​​

Bulletproof tells the story of six young boys who met a caring boy who helped them through their struggles, but lost him in the middle of the road. His name was Jin. The title says it all. This is about each one of them, how they found Jin and how they lived before him.