Arisaro Minato adalah murid pindahan yang tidak mempunyai kekuatan apa-apa. Tetapi sejak dia bertemu Yukari, Junpei, dan teman-temannya. Ia mempunyai kekuatan yang disebut 'PERSONA' untuk melawan Nyx.

Ia has a abnormal life at school being the only vocaloid. She is also alone because no one would be a true friend there unless less they "didnt" know her identity. Now, another vocaloid Io, one shes never heard before comes to her school now. Slowly, she begins to develop feelings for him. She starts performing with him, going on tours with him, Is it "fate"?

Life in Berk has changed dramatically since the dragons moved in, but things are not as peaceful as they might appear. With fires, food shortages and dragon dung all over the village, it is up to Hiccup and his friends to bring the wild dragons under their control. They have until Thor's feast to complete their mission, or risk having dragons kicked out of Berk for good!