When a girl named Miku Hatsune from a Virtual World, moves to a world of reality in Seoul City, South Korea. She loves to sing and dance. After she transferred in 'Bangtan High', she met a handsome boy named Kim Taehyung/V and he greets her to his 6 other friends. Few days later, Bangtan sees that innocent Miku was having trouble of being bullied by some groups of boys and girls wanting to mock and hurt her feelings by making her cry. So each Bangtan members stays on guard for Miku in different classes so she wouldn't get hurt. Will they keep protecting her?
8 parts